An idea on how to deal with people who are obnoxious enough to name themselves with a custom symbol nobody's ever seen before (e.g. the musician who called himself "Prince") -- let all such people share a unicode symbol which is a hand with a raised middle finger. People can then pronounce that "Asshole". I'm sure at some point they might confront someone who did that, but I could always defend it as being "my own personal dialect". I'm sure that if they care so much about individualism, they'd respect that, right?
This reminds me a bit of someone who briefly friended me on LJ, and then apparently found out that I routinely voted to delete similar arn't-I-special crap (in this case, said person is really into micronations and doesn't seem to grasp that encyclopedias are not the place for public masturbation), so they sent me a grumbly email and unfriended me. In a sense, Wikipedia does a public service in helping us find people who have such broken attitudes. This goes likewise with artists -- if they can't accept the fact that there are plenty of people in the world, some of them well-versed in art or music and others in their social circle, that don't like their stuff, they have some growing up to do.
This goes likewise with furries or people who claim they were born in a wrong-gendered body - if they demand other people recognise they're a cat inside or that other people adopt a notion of gender that lets them be what they're biologically not, they're broken in that social need. This is even moreso when they start inventing new symbols and pronouns they want people to use when thinking about them.
What I'm really getting at with all of this is that it's more important to let people have their own frameworks and ideas on social reality than to demand that other people change theirs to meet one's own social needs. If somebody wants to decide for themself that they're special, that's fine. If they demand that other people buy into that game and become indignant when that doesn't happen, that's broken.