If Chomsky begins to matter in a reality changing manner, will he still be tolerated, say, as the US risks genuinely being undermined with its current superior position in the world due to the effects brought about by him?
At this moment, as a consequence of the war, even Tchaikovsky is being sanctioned as it is considered necessary in western world.
So it is more like that the US allows a Chomsky when it can afford it. But this affordability is very complex and has a lot to do with the privileges of the US (and typically western nations) in the globe which isn't necessarily fair for other nations (typically non-western nations).