you might say, no, plenty of academics teach undergraduates, and undergraduates are super ignorant. but undergraduates generally don't care whether bb(123456789) is computable or not unless that's on the exam, and their incentives run strongly counter to arguing with the professor if they're unconvinced; the way they've learned to play the academic game is by producing the desired answers, because that's what gets good grades, not finding holes in professors' reasoning
so i think people like scott and sabine hossenfelder are doing profoundly important work, and the groundless controversies around them demonstrate not the error of their ways but the astounding degree to which the current academic system is failing to educate the public
I don't see how the second part of the sentence implies the first. The primary role of academics is generating new knowledge. Educating the ignorant is a public service that few are willing or able to do. Scott Aaronson deserves a lot of credit for dedicating so much energy to his blog, it does not mean that 99.99% of his peers are wrong in focusing on advancing the frontier of knowledge.
i won't go so far as to claim that this imposes an individual moral obligation on every academic—that would be a variety of consquentialism with many consequences i shrink from—but at least it would be good to figure out how to demarginalize what scott is doing