I enjoyed Yudkowsky's written works (HPMoR is an interesting read with a classical overpowered protagonist because plot, Friendship is Optimal is frankly horrifying when you strip away the cutesy MLP trappings since the AI is actively murdering people, digitizing a copy of their consciousness, and then altering the digitized person to be "more pony-like", and the Baby-Eating Aliens short story is a fascinating bit of sci-fi with actual alien cultures instead of "like humans but...") quite a bit.
The LessWrong community can go suck start a shotgun while taking a long walk off a short pier while wearing concrete shoes, though. It's fucking absurd that a community that originally formed around HPMoR's hot take of "examine everything rationally through a skeptical lens" became a cult of personality.
Though, honestly, you can probably apply that to most larger fan communities; lowest common denominator comes in, gets catered to, and the fandom slides further and further down until it hits rock bottom (and, occasionally, begins to dig).
“When I became a man I put away childish things, including the fear of childishness and the desire to be very grown up.”
C.S. Lewis
Acting like something is beneath you for having a simplistic appeal is honestly quite absurd. You can certainly be disinterested in something because the subject matter is not interesting to you, but framing it as "being too adult to care" frankly reeks of a juvenile mindset.
Every person in the world would benefit from studying algebra to at least the college level, if only because that's where you move on from "remember these formulas", which is useful in passing a class, to "understand these concepts", which is useful in day-to-day life; there's a LOT of benefit to understanding that algebraic relationships can be applied to a wide variety of real-world concepts. Similarly, every person would benefit from a (DECENT) introductory trigonometry class; specifically, one that focused on conceptual uses rather then "OK guys, just memorize SOHCAHTOA for the test, yeah?", because being able to understand spatial relations is damned useful.
At the same time, I'd also strongly want people to have to take (again, decent) statistics classes, classes on taxes, all the stuff we used to call "home ec" (like cooking, housekeeping, laundry, etc), basic logic classes, and a number of other things that I'm sure many would call useless fluff classes (at least until they get out into the real world and suffer for the not knowing).