I firmly believe that nothing is beyond Furries. Some will sink to any level to gratify their sexual urges. A lot of furries assure me that not ALL Furries like looking at poorly drawn pictures of cartoon characters having sex, not ALL Furries like reading Rescue Rangers erotic fiction, not ALL Furries have sex in Fursuits, not ALL Furries own a collection of specially modified 'yiffable' soft toys, not ALL Furries do these things - it's just the 'Furverts' it's just some bad 'Fursons' that are into those things.
Furryism is like an onion. Consider an onion - it has layers upon layers of skin that can be peeled away. Furryism is like that, but instead of layers of onion skins furryism has layers upon layers of what is scientifically known as "Horrible disgusting shit". And, like an onion, as you peel away more and more layers of horrible disgusting shit you tend to start weeping uncontrollably. While it is entirely fair to say "Not all furries are into [Horrible sexual deviance of choice]", it is a misleading statement that doesn't tell the whole story. Consider a group of ten people - 3 of them are paedophiles, 3 of them are zoophiles, 3 of them are rapists and 1 of them has a thing for corpses. Now, it is entirely truthful to say "Hey, not all of these people are into having sex with corpses" but that doesn't tell the whole story - it is instead more accurate to say "Hey, ALL of these people are into some really horrible stuff", and so it is with furryism.
If you go to any of the more popular Furry websites, all you'll see for miles and miles is pictures of various cartoon characters, or "fursonas" engaged in all manner of depravity - this represents the majority of furry art. When you type 'fursuit gallery' into google, one of the top 5 results is "Female fursuit sex gallery lesbians lolita teen preteen 13-year ..." (in fact a lot of innocent queries related to Furryism will bring up a plethora of Furry porn/paedo websites). This is furries are the internet's #1 laughing stock - they earned it.