If the nickname was obviously a femmine one, (e.g. 'Jane'), or even something more exotic but still recognizably femmine (e.g. 'Aerith') I would agree.
But you could infer that 'Alicorn' was a femmine name only through the association between interest in unicorns and being female (which is specifict to some subcultures). That doesn't seem to me any less stereotypical than inferring that somebody is male through the association between nerd interests and being male (which, on the other hand, is supported by statistical evidence and AFAIK occurs in any culture).
Social tact dictates that some care should be taken to avoid making mistakes. Getting pronouns wrong is embarrassing, particularly if someone is around to play offense.
Wei Dai argues that offense is a response to a perceived threat to one own status. He also cautions about oversensitivity.
It doesn't seem to me that getting a pronoun wrong because you didn't datamine the Internet for personal information just to get a pronoun right is an attack to someone status.
True, you could use gender-neutral constructions. I'm not a native English speaker, but I suspect that many native speakers find constructions such as 'he or she', the epicene 'they' or paraphrases like 'this person' excessively artificial and unidiomatic for informal speech.
After all, why should you assume that somebody over the Internet will be offended if you incorrectly guess the content of their pants? Isn't equality feminism all about not caring about what kind of genital organs people have got, except on issues directly related to these organs?
If somebody posted a comment like: "Every woman knows that babies are cuter than rabbits. It's in our maternal instinct. This guy doen't know what he's talking about." then Alicorn could be reasonably offendend, since this comment would imply that she was defective as a woman and hence it would lower her status. But that's not what was posted. The poster actually liked the article, she (*) just got one pronoun wrong.
(* the 'Sharon' signature and the remark about being a mother are definitely enough evidence to infer that the poster is a she)
Wei Dai argues that offense is a response to a perceived threat to one own status. He also cautions about oversensitivity.
Not being oversensitive yourself is a good practice, dismissing the possibility that another will be offended by something you do is called "insensitive". Yes, sometimes you should take a stand and decide that a person getting offended about a particular thing is their problem, not yours (otherwise you give them complete control over you). However I don't think someone being mildly (or occasionally significantly) offended w...
Daniel Dennett has advanced the opinion that the evolutionary purpose of the cuteness response in humans is to make us respond positively to babies. This does seem plausible. Babies are pretty cute, after all. It's a tempting explanation.
Here is one of the cutest baby pictures I found on a Google search.
And this is a bunny.
Correct me if I'm wrong, but the bunny is about 75,119 times cuter than the baby.
Now, bunnies are not evolutionarily important for humans to like and want to nurture. In fact, bunnies are edible. By rights, my evolutionary response to the bunny should be "mmm, needs a sprig of rosemary and thirty minutes on a spit". But instead, that bunny - and not the baby or any other baby I've seen - strikes the epicenter of my cuteness response, and being more baby-like along any dimension would not improve the bunny. It would not look better bald. It would not be improved with little round humanlike ears. It would not be more precious with thumbs, easier to love if it had no tail, more adorable if it were enlarged to weigh about seven pounds.
If "awwww" is a response designed to make me love human babies and everything else that makes me go "awwww" is a mere side effect of that engineered reaction, it is drastically misaimed. Other responses for which we have similar evolutionary psychology explanations don't seem badly targeted in this way. If they miss their supposed objects at all, at least it's not in most people. (Furries, for instance, exist, but they're not a common variation on human sexual interest - the most generally applicable superstimuli for sexiness look like at-least-superficially healthy, mature humans with prominent human sexual characteristics.) We've invested enough energy into transforming our food landscape that we can happily eat virtual poison, but that's a departure from the ancestral environment - bunnies? All natural, every whisker.1
It is embarrassingly easy to come up with evolutionary psychology stories to explain little segments of data and have it sound good to a surface understanding of how evolution works. Why are babies cute? They have to be, so we'll take care of them. And then someone with a slightly better cause and effect understanding turns it right-side-up, as Dennett has, and then it sounds really clever. You can have this entire conversation without mentioning bunnies (or kittens or jerboas or any other adorable thing). But by excluding those items from a discussion that is, ostensibly, about cuteness, you do not have a hypothesis that actually fits all of the data - only the data that seems relevant to the answer that presents itself immediately.
Evo-psych explanations are tempting even when they're cheaply wrong, because the knowledge you need to construct ones that sound good to the educated is itself not cheap at all. You have to know lots of stuff about what "motivates" evolutionary changes, reject group selection, understand that the brain is just an organ, dispel the illusion of little XML tags attached to objects in the world calling them "cute" or "pretty" or anything else - but you also have to account for a decent proportion of the facts to not be steering completely left of reality.
Humans are frickin' complicated beasties. It's a hard, hard job to model us in a way that says anything useful without contradicting information we have about ourselves. But that's no excuse for abandoning the task. What causes the cuteness response? Why is that bunny so outrageously adorable? Why are babies, well, pretty cute? I don't know - but I'm pretty sure it's not the cheap reason, because evolution doesn't want me to nurture bunnies. Inasmuch as it wants me to react to bunnies, it wants me to eat them, or at least be motivated to keep them away from my salad fixings.
1It is possible that the bunny depicted is a domestic specimen, but it doesn't look like it to me. In any event, I chose it for being a really great example; there are many decidedly wild animals that are also cuter than cute human babies.