I suggest it’s a bit of an echo chamber (not derogatory). There are other places where you can observe similar behaviors that aren’t online. I’ve said this elsewhere, but gym cultures have calorie counting, in group language, and other norms that aren’t mainstream. I have a theory there’s some undiagnosed folks on the spectrum in gyms.

My best bet is that the politically-left encourages a mindset, that revolves around openness (in the sense of communism), creativity (queerness) and a great ability to think in equilibriums and equations (and Zen-Buddhism), rather than progress and advances. That leads to natural tendencies like math (I see a lot of queer people also study math) and FOSS rather than money-making enterprise.

I’m not a furry so i’m talking from an outside perspective. I think furries are people, who aren’t accepted in the society, so they start attending furry things to be more accepted.