I'm not a furry or into loli stuff but I think there's a big difference. Furries do closely resemble adult human bodies in every way, however lolis resemble human children.

The only difference between pantie shots of underage girls in anime and those in real life is the fact that one is on a screen. People who get off specifically to the fact that these characters are underage have no excuse for doing so besides being into children in real life. It is specifically their youth and by extension their lack of ability to give meaningful consent (because they treat anyone older than them as an authority figure) which, to a certain class of degenerate, makes them attractive.

If a real-life man who was short and had a childlike face was in a bar complaining about how his wife left him, and someone else in that bar thought he was hot, no one would begrudge them for it, because he's an adult. So it is with furries. We see that animals are not intelligent and cannot give consent and ask ourselves "what if they were intelligent? what if they looked human? what if they stopped being animals in any meaningful way besides having fur?"