The term I would use here is “doubletalk”. Or just “bullshitting”.
I don’t have the words for it but I feel like this is an old story we’ve seen in other furry drama before. Furries know they’re up to their necks in depravity and sketchy behavior but rather than you know, quitting when something truly horrible comes up, they try and split hairs and use circular logic and deceptive talk to justify their being furries.
I’ve run into non furries who upon being exposed to even tame furry content - soft core art, stories, RP - have said there’s something very dark about the art and the fandom. None of them could put their finger on it and elaborate but independently they all said that: it’s so dark. It’s like, even if it’s the tame stuff, you can feel the unpleasant needs, and desires, and urges underneath it all that drive furries to be the way they are.