I don't know about you, but I've run across some pretty f*cked up furry related stuff on the internet. I'm not saying that ALL furries tend to lead towards bestiality, but definitely a good portion.
MLP fans generally are just fans of the show. Furries on the other hand, tend to lean towards bestiality, to the point at which it stops being a hobby and starts to get creepy (e.g, furry R34, fursuiting, etc.).
I'll have to agree, I think as soon as something becomes so big in belief that many follow it, it's sorta cultish and religion like. I do know however, it's a touchy subject lol but i stand by and agree with you.