A lot of people say this, but I think it's the wrong word in an important way.
I'll give you P(autistic|rationalist) > P(autistic), but beware the base rate fallacy. My guess is you're focussing on a proxy variable.
To show some important counter-examples: Temple Grandin, famously autistic and a lot of people's idea what autism means - not a rationalist in the sense you mean. Scott Alexander - fairly central example of the rationalist community, but not autistic (he's a psychiatrist so I trust him on that).
EDIT: also P(trans|rationalist) > P(trans), but P(rationalist|trans) I'd say is fairly small. Base rate fallacy and something something Bayes. Identifying these two groups would definitely be a mistake.
EDIT2: maybe this series (1 post so far) is worth bookmarking: https://thingofthings.substack.com/p/what-do-effective-altru...
The more common pattern is a false prophet cult where the influential leader is a paternal figure bringing enlightenment to the flock. It just so happens that free labor and sex with pretty girls are key aspects of that journey.
It doesn't mean that "all X are Y" or "Y's are usually X".
Edit: Funny enough, when I wrote "autistic thought traps", I thought I just made it up to describe something, but it is common terminology. An AI summary of what they are:
Autistic people may experience thought traps, which are unhelpful patterns of thinking that can lead to anxiety and stress. These traps can include catastrophizing, all-or-nothing thinking, and perseverative cognition.
Catastrophizing: Jumping to the worst-case scenario; Imagining unlikely or improbable scenarios; Focusing on negative aspects of a situation; Having difficulty letting go of negative thoughts;
All-or-nothing thinking: Categorizing people or things as entirely good or bad; Having a tendency to think in black and white;