Same guy (Scott Siskin) wrote slatestarcodex.com, which covers over a hundred writeups of a similar quality, going back to 2013. Lots of great stuff. I recommend checkimg the top posts on that blog, its the best content on the internet imo. I've read almost all of it.
He changed to Astralcodexten after the New York Times threatened to Doxx him (for "policy" reasons), which basically upended his entire life, since he had (and now still has, in a slighly altered form), a successful psychiatry practice. Brilliant guy.
I didn't know his name until you wrote it here (I specifically abstained from looking it up), so to me you're the part of that NYT doxxing crowd who "upended his entire life".
While he is still uses the pseudonym Scott Alexander, he has told his real name in Astral Codex Ten so I don't believe it's supposed to be a secret anymore.
He changed to Astralcodexten after the New York Times threatened to Doxx him (for "policy" reasons), which basically upended his entire life, since he had (and now still has, in a slighly altered form), a successful psychiatry practice. Brilliant guy.