Who knows? They seem to know all these people personally, so I guess they attend rationalist cuddle puddles in SV or something.
I ran into them online a year ago when a Twitter follow shared their last essay with some acerbic comments about the lengths (both in the mental & absurd word count senses) they were going to do deny their desire to transition & they appeared in the comments after I made a snarky remark along the lines of “methinks the lady doth protest too much”. Still quite proud of that one.
https://www.rayrender.net/ ?