No opinion on Chomsky's politics. But that quote definitely needs some substantiation.
Personally, I don't see how anyone, has managed to set back computing by 50 years.
But the three grammar classes were correct, and are still in use. They were later found to match work done 2500 years ago, in India.
Being wrong in science, particularly biology, is not a crime, nor, usually, even a shame.
No opinion on Chomsky's politics. But that quote definitely needs some substantiation.
Personally, I don't see how anyone, has managed to set back computing by 50 years.