Making general statements about the risks and benefits of medication is different from proscribing them. The George K. Lerner, MD who was FTX's resident pill-pusher seems to be based in San Francisco and wants potential patients to know that inter alia "Dr. Lerner specializes in the treatment of Attention Deficit Disorder (ADD/ADHD) in adults. He has extensive experience in treating adults who have been successful in their professional endeavors but have found attention deficit symptoms to be an impediment to achieving their full potential." (nudge nudge)
His website does not mention a connection with the hospital in Michigan which is the only one where I know Alexander worked. I would like to know more about possible connections other than their mutual connections to the FTX gang. I have not done shoe-leather reporting in SoCal and almost all of the things we know about Alexander are things he posted voluntarily under his main handle.
Lerner's site shows what Alexander's site might look like if he were focused on psychiatry rather than writing and peddling racist lies.
I think Hallquist had a short-lived blog with criticisms of LessWrong and EA between his time on FreethoughtBlogs/Pantheos and his run for office and Medium blog. Possibly https://topherhallquist.wordpress.com/2015/08/17/reply-to-scott-alexander/ In the original Twitter post, Hallquist described Alexander as "a vague internet acquaintance at the time (when he sent the emails)" and it sounds like after 2014 Hallquist explored LW and EA and decided they were messed up. (Hallquist's post also suggests that if you want to sound like a bold contrarian, see what a median expert at a university think about a topic rather than reading blogs).
I like to remind myself that I see what happens online, but the offers of money and the sexual propositions probably mostly happen in person or between people who have met in person. So I don't know as much about the LessWrong or EA communities as I think.