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.
I don't think the average matters, it's the right tail of the distribution that's important.
Take, say, people with 130+ IQ -- that's about 2.5% of your standard white population and the overwhelming majority of them are not signed up. In fact, in any IQ quantile only a miniscule fraction has signed up.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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