Like this is a luminary in the field, mocking his critics for making a prediction he finds risible when that prediction HAS ALREADY COME TRUE. He did the thing, and it went badly, in the way that everyone who is mad at him was saying all along that it would go badly. But he still thinks that he's right! This is not an unrepentant dumb guy being dumb, this is one of the smartest engineers in the field BECOMING dumb right before our eyes. That ought to scare you!