Explanation of why this hypothesis is unlikely to be correct: https://www.lesswrong.com/posts/7iAABhWpcGeP5e6SB/it-s-proba...

Related:

A Chemical Hunger: Mysteries - https://news.ycombinator.com/item?id=27796557 - July 2021 (198 comments)

(Reposts are fine after a year or so; links to past threads are just to satisfy extra-curious readers)