Chomsky has a long tradition of whitewashing human right abuse - in 1977 he did just the same thing for Khmer Rouge
https://en.wikipedia.org/wiki/Cambodian_genocide_denial#Chomsky_and_Herman
That Wikipedia section does not provide any evidence of Chomsky whitewashing the Pol Pot genocide; it only provides evidence of people trying to claim that. Look at Chomsky's books themselves rather than how people try to interpret them.
The image of text you've pasted is not denying or whitewashing the Uighur genocide.
The text is missing context (interviewer? audience?), but presumably it's to a US audience, holding more political responsibility in Palestine than in China.
> Look at Chomsky's books
I did read his whole book with Herman years ago, and it was nothing else but good old denial. He raised doubt about every single piece of evidence for genocide from Kampucha, basically doing nothing else than people who "asked valid questions" about Auschwitz ("but why the chimneys were so small"), Holodomor ("why would USSR do that"), Gulag ("that would be ineffective") etc etc. And Chomsky continued this even after mass graves were discovered.
@kravietz
"I did read..."
I haven't analysed what Chomsky said, on what dates, to that level of detail. I'm sceptical about "nothing else than". The evidence we have now for past genocides is vastly different to what was available at the time. Anyway, on this specific point we probably just have to disagree in our judgments.