I know a few young gay male furries...and am a young lesbian furry myself, however, I do not believe that most are in it simply to join a community on the edge. I mean, furries do have a common interest...that is a single common interest. Sure there could be other things...but we are all here because of, technically, only ONE thing. It COULD bring furries together, but there could also be an array of other differences that could bring them apart. I love all my gay guy friends to death, but I'll admit they do tend to act a little too rambunctious and immature for my tastes at times. I just wouldn't be so quick to say that they are only in it simply to be part of another minority. They're already discriminated enough as gays, why would they want to be a part of something that seems to get even more crap? That's just my opinion on it.
I, for one, am an avid furry artist and a soon-to-be fursuiter as is one of my other younger gay friends. The rest wish they could but don't have the talent or the money, although one is a DJ. So we might like anime and video games...anime conventions have 30+ people who are just as into it as the "kids" ...it's just different interests, whether in this fandom or not.