As for the furry issue, I'd have to say I agree with the stance that's its disgusting and everyone involved needs psychological help. In my time on the internet, I've seen a lot of furries equate their fetish with being gay, which... Yeah, just no.
Why differentiate between flavors of sexual deviations from the heterosexual "norm"? Either you are committed to tolerance and accept all sexual preferences of others (barring rape, pedophilia etc.) or you're a hypocrite that just moves the goal posts on tolerance to match societal acceptance.
Logically I understand there is nothing cosmically wrong with being gay (or wanting to have sex with animals or dead bodies or whatever). I don't oppose their existence or rights.
From my personal and subjective perspective I find it all disgusting to imagine and don't want to be involved with it or watch it or anything else. This is most likely at least partially due to the environment I grew up in. Maybe they can't change their desires, much as I can't help being repulsed by it.
I see no logical standing to arbitrarily be accepting of one variation in sexual desires and not another. The only difference being in cases where one partner is non-consenting.
So if you're not personally inclined to suck a dick or hump a dog why treat one as acceptable and the other as "needing psychological help"? How do you know that each of those impulses as well as your own aren't derived from the same sources? We don't fully understand how much of what people feel is nature vs nurture (to the best of my knowledge, links to studies and articles on this matter are welcome), and even if we did, should it really make a difference?