Weird rp wouldn't be sneer worthy on it's own (although it would still be at least a little cringe), it's contributing factors like...

• the constant IQ fetishism (Int is superior to Charisma but tied with Wis and obviously a true IQ score would be both Int and Wis)

• the fact that Eliezer cites it like serious academic writing (he's literally mentioned it to Yann LeCunn in twitter arguments)

• the fact that in-character lectures are the only place Eliezer has written up many of his decision theory takes he developed after the sequences (afaik, maybe he has some obscure content that never made it to lesswrong)

• the fact that Eliezer think it's another HPMOR-level masterpiece (despite how wordy it is, HPMOR is much more readable, even authors and fans of glowfic usually acknowledge the format can be awkward to read and most glowfics require huge amounts of context to follow)

• the fact that the story doubles down on the HPMOR flaw of confusion of which characters are supposed to be author mouthpieces (putting your polemics into the mouths of character's working for literal Hell... is certainly an authorial choice)

• and the continued worldbuilding development of dath ilan, the rationalist utopia built on eugenics and censorship of all history (even the Hell state was impressed!)

...At least lintamande has the commonsense understanding of why you avoid actively linking your bdsm dnd roleplay to your irl name and work.

And it shouldn't be news to people that KP supports eugenics given her defense of Scott Alexander or comments about super babies, but possibly it is and headliner of weird roleplay will draw attention to it.