I find it curious how many people
severely downrate the intelligence of others: to even write a coherent text the length of HPMOR — regardless of how you feel about the plot points or if you regard it as derivative because of, well, being self-insert Marty Stu/Harry Potter fanfic[0] — requires one to be significantly higher than "moron", or even "normal", level.
Edit: I can't quite put this into a coherent form, but this vibes with Gell-Mann amnesia, with the way LLMs are dismissed, and with how G W Bush was seen (in the UK at least).
Ironically, a similar (though not identical) point about Bayes was made by one of the characters in HPMOR…
[0] Also the whole bit of HPMOR in Azkaban grated on me for some reason, and I also think Yudkowsky re-designed Dementors due to wildly failing to understand how depression works; however I'm now getting wildly side-tracked…
Oh, and in case you were wondering, my long-term habit of footnotes is somewhat inspired by a different fantasy author, one who put the "anthro" into "anthropomorphic personification of death". I miss Pratchett.