I noticed that some people just have an extreme hatred for furries.
I have a friend and I would not call him a generally intolerant person at all, he knows I am homosexual and never cared unlike all other people I have ever told about that(around 6 people), but he has an extreme hatred for anything furry. Like on the level of “All furries should be killed” not the usual shit we can read on the internet.
I do not understand it, but there is really no way to get him to any not as extreme standpoint.
I think this is the answer.
The furries i have met irl seemed to be disproportionately socially awkward, and some people in the wider geek culture around them seemed to delight in having someone to look down on as less than.