Curious for the source? To my recollection, Chomsky talked about distraction, i.e. repurposing attention. OP is talking about the pool of attention as a whole drying up (versus being misdirected).
Chomsky needs to STFU about politics and go back to linguistics - though he’s not popular in linguistics right now either.
I think you have to start with his criticism of Skinner (papers that criticize other papers are often the best and the most informative ones) and his theory of UG, then Everett's claim and Chomsky's rebuttal (sightly weak, but interesting to understand his views on UG). I know UG has been rebuilt (basically his theory was falsifiable, was falsified on the field, then UG people worked on another similar theory that corrected some mistakes), but it was post 2011 and i stopped followed humanities around that time, and never got back into linguistics, so you might want to read about that.
[0] Something similar happened in France with Furet, and the fact that Furet's school of thought still somewhat exist and the debate lasted decades on polite terms without ad hominem is a compliment to historian's values and practice. Saying "critical thinking" and running away from correct criticism is shameful.
https://en.wikipedia.org/wiki/Cambodian_genocide_denial#Chom...
https://en.wikipedia.org/wiki/Bosnian_genocide_denial
https://www.monbiot.com/2012/05/21/2181/ (Chomsky defending the decision to write a foreword for a book denying the Rwandan genocide)
https://en.wikipedia.org/wiki/Faurisson_affair (Chomsky signed a petition supporting a Holocaust denier he felt had been mistreated)
Regarding Cambodia, the Khmer Rouge coalition was pushed out in 1979 and the US began arming the KR coalition, providing UN support for it etc. You would think the US and Reagan arming the Khmer Rouge coalition more heinous, if you don't like them, than Chomsky saying the US should not bomb Cambodia in the 1970s etc.
The UN and every human rights organization in the world says the US has been and is involved in a genocide in Gaza. The denial of this in the US has been incredible, but now that the first stage is done the Press is more forthcoming about it. Something Chonsky opposed, the establishment supported.