By "detractors", does he mean "the usual bunch of chumps rushing out hot takes?"

If so, that doesn't seem a fair comparison. He's a supposed intellectual, and highly influential. They are just dipsticks with twitter accounts, about half of whom will have two-digit IQs just by the law of large numbers, possibly with dozens of followers.

If "detractors" are themselves influential public intellectuals, it would be a stronger statement. But it would also require more support than goes into a tweet.