It’s because the furry fandom, when it was founded back in the late 70’s by a gay polycule of sci-fi fans, was one of the only communities in existence that accepted openly gay and trans people. (And the only non-fetish community.) For many queer people, the furry fandom is the first place they ever feel welcome.

There’s a novel titled Glasshouse, by Charles Stross, where members of a far future civilization sign up to live in a simulated mid-20th century town. At one point the protagonist disassembles a flashlight and discovers that it’s just a flashlight-shaped case containing a small wormhole whose other end is in close orbit around a star. No one knew how to make an LED or incandescent bulb, or understood enough about early electronic components to hook one up to a switch and a battery. It was easier to make a wormhole generator and stick it in a metal tube.