People who-have-heard-of-but-are-not-really-into LessWrong, in my conversations with them, have dismissed the site as an echo-chamber of inside references.
In my experience, this is one of the most common patterns of dismissal out there. It's also one of the easiest to dismiss: every intellectual movement will contain communications among insiders, and those communications will use terms that outsiders won't be familiar with.
"Wow, you mean people write for their audience? What a surprise!"
Or: "Every field has inside references." And then list examples from whichever mathematical or scientific field you're most familiar with.
Now, whether or not this is a desirable pattern to fall into is another issue entirely.
My stupid fanfic chapter was banned without explanation so I reposted it; somehow it was at +7 when it was deleted and I think silently deleting upvoted posts is a disservice to LessWrong. I requested that a justification be given in the comments if it were to be deleted again, so LessWrong readers could consider whether or not that justification is aligned with what they want from LessWrong. Also I would like to make clear that this fanfic is primarily a medium for explaining some ideas that people on LessWrong often ask me about; that it is also a lighthearted critique of Yudkowskyanism is secondary, and if need be I will change the premise so that the medium doesn't drown out the message. But really, I wouldn't think a lighthearted parody of a lighthearted parody would cause such offense.
The original post has been unbanned and can be found here, so I've edited this post to just be about the banning.