The Internet hatred for furries always bothered me. I’m not into it, I think it’s weird, but so what? I think BDSM is weird too, but we don’t treat people into BDSM like we treat furries- as if they’re some sort of disease. I’ve met a few working at sci-fi/comic cons over the years and they’ve always been really nice, decent people. They just have a kink. Lots of people have kinks.
I think it's the fact that furries tend to bring their kink public. I have not consented to engage in your sex games. If he showed up to a ceremony in leather and a ballgag no one would be ok with it, but the fur suit is the equivalent.

bring their kink into public

But it’s not a kink for them.