I wonder if the post-rationalist/tpot community is a kind of meta-rationalism or if it's another stepping stone before it. This recent tweet is interesting, though i'd say that post-rats are more concerned with the meaning crisis than effective accelerationism: https://twitter.com/nosilverv/status/1625951461673734169
Might be worthwhile to explore symbolic dynamics. I wrote a research notebook exploring similar ideas a few years ago.