"Deceptive" is a bit bloody presumptuous of them. Mind you, I used to use "bimbette" as an IRC nick and got a ridiculous selection of wannacybers. I'd definitely class this as a problem with them and not with you.
Call yourself what the hell you like. If you're worried about effects of the name on how your text is taken, change it to a small random bunch of letters and numbers or something.
So, my current username often reads as female. This is not intentional, and I am not female. Some on IRC have pointed out that this username could be considered misleading or deceptive. I have no real attachment to it, but I do have a few articles that I've been discussing and planning on posting here, and I think it would be confusing for others if I changed usernames, making it difficult for people to follow the genesis of certain ideas. However, I also don't want to mislead anybody.
Therefore, I pose the question to the community: is my current username deceptive or otherwise misleading, and should I change it?