Furries do tend to be more open about kink (as part of the community’s general culture of acceptance), but to describe furry as a “kink subculture” is misleadingly reductive at best.

It reminded me of the old comic with the phrase "on the Internet, nobody knows you're a dog".

Less kink and more “if you’re on the internet why NOT pretend to be a walking talking dog?”

See also, VTubers, manga artists (who often represent themselves as characters), and our tendency to anthropomorphize computers (“it’s gotta think”)

It's not a kink subculture. There are kink subcultures within it, but the only common factor among all the subcultures inside it is an appreciation for anthropomorphism.