Ok, that was maybe a bit too far (sorry about that), but it's technically the same mechanism.
The halo effect, which is a cognitive bias, makes people believe that people with a certain trait have also other traits, which can be positive or negative.
I already explained that to that guy, so ig it was a 1 for 1 joke ?
But no, I think that anti-furry is a way tinier problem than racism, and it's totally unrelated. But they unfortunately falls on the same mechanism...