In slight fairness to Aaronson, he doesn't present this as a "universally held opinion of people in tech", as the rest of that excerpt goes to say:

> . . . but not (I don’t think) to the tens of thousands who read Scott’s essays and fiction, particularly during their 2013-2016 heyday, and who went from casual enjoyment to growing admiration to the gradual recognition that they were experiencing, “live,” the works that future generations of teachers will assign their students when they cover the early twenty-first century.

So he's pretty much saying Slate Star Codex has fans who will miss it a lot.

(I do agree with you that the comparison is pretty nuts, even as someone who thinks Slate Star Codex has a lot of good stuff.)