But the intellectual quality of some of the people who have signed up for cryonics is exceptionally high
The intellectual quality of some people who have NOT signed up for cryonics is exceptionally high as well.
But the average is lower, and not signing up for cryonics is a "default" action: you don't have to expend thought or effort in order to not be signed up for cryonics. A more relevant comparison might be to people who have written refutations or rejections of cryonics.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.