Also there is something seriously wrong with the world when a people playing virtual pretend immidiately makes others, even in such thoughtful places such as HN suspect that they are horrible child molesters etc etc.
EDIT: for what is worth, I tangentially work on the same sort of software. My system is a training environment not intended for the public, but a lot of the same concerns are involved. Currently, we have no avatar selection system. Everyone gets the same avatars, differentiated by a name tag. This was 50% a deliberate decision to avoid avatar mayhem and maintain an egalitarian environment, 50% pushing off the problem until I can figure out how to give some options without devolving into avatar mayhem.
As mentioned in another comment there's no difference between someone choosing say a furry avatar vs someone choosing say a star trek character as their avatar. Same reason: they enjoy that world/universe.
Why do people make pop culture jokes? Because it's something they familiar with and enjoy and that gives 'em the seratonin.
If say 40% of all quarterbacks were named James, you are not explaining that by saying "James is a perfectly normal name, just like Richard or John".
I feel seriously old since I've been using furry fox avatar in SecondLife back in the 2006, and even then, this was fairly common.
I also wonder if its really as many as you think it is, or if they just stand out to you because you don't like them. You also don't have a good basis of comparison since you have no idea how many people in regular life are like that (i imagine its still much higher in vr space, but maybe the gap is not as vast as you think)
Sexually developed adults suffering from age or species dysphoria and ultimately demanding rights to match their self image is something that should not be encouraged in civil society, as those rights are inextricably linked to an implied requirement for consent which cannot be given.
It might be tempting to try and draw a line between the kind of folk above and the folk from the video, but I find that difficult given the variety of clearly sexually exaggerated avatars on display. The one that sticks most in mind being a fox with a pair of impractically large breasts.
As far as i understand, furries just want to dress up as animals and maybe have sex with other people dressed as animals, not have sex with actual animals. As long as everyone involved is a consenting adult i don't see anything wrong with that. I might think its weird, but that's true of a lot of "sex" things. Seems very very different from the people attracted to children.
There is definitely a cute and innocent side to the furries particularly among younger folk, it seems for many there is no sexual element to it at least initially. It'd be a much happier world if the two were more easily separable, but even then the question would remain whether the gentler group acted as a pathway for the uglier group. That both exist undifferentiable and intermingled in the same spaces is extremely problematic, and a priority issue for those folk to solve.
In the early gay community it was also the case that desires for otherwise healthy and innocent rights were abused to mask much more insidious causes. Today it is unlikely you'd see homosexuality and paedophilia mentioned in the same breath without provoking a surprised response, but relatively recently that perception was still common. I think this is probably a good parallel to where furries are now
Saying you're LGBT doesn't inherently make you LGBT - nor does it grant you any particular credibility. The community is insanely diverse these days and at least in American politics, most of the large issues have been resolved (with the exception of trans individuals, who still face struggles w.r.t. insurance and healthcare).
MAPs tend to latch on saying their "attractions" (pedophilia) are part of their unique sexual identity. This is not true, and GP is correct in pointing out these two groups cannot adequately acquire consent from the other party - one is incapable, and other has determined to be not of mature enough mind and body to do so.