But because drawings of fursonae exist, rule 34 ensures that there is porn of them. Some people really like that kind of porn, unrelated to whether they're furries or not, and I believe it is those people the hate is directed at.
This would be my opinion. I'm neutral towards furries; I am not neutral towards the flood of porn that seems to make up the majority of my every (and often only) contact with the furry community and I'm honestly surprised that wouldn't be the obvious answer. Do I get to see how those suits are crafted? No, I've never seen that. Saw a tiger getting railed in an elevator yesterday, though.
It's really not doing me any favors in the fediverse right now. I shouldn't have to voluntarily search "yiff" every few days just to search for new things to preemptively block and I can't turn NSFW off, either, without banning myself from my own medical subs.