I think that I heard that one. Trump pointed out that American Jews who vote for Kamala are voting against their own interests.... something like that. Something about "needing to have their heads examined." Specifically because Kamala is half-hearted in her support for Israel, world peace, and defeating terrorists. Not doing enough to sanction and control Iran, and not doing anything to protect American Jews on campuses and in their neighborhoods.
Okay, I'll agree that Trump has a way with words and a knack for stating the obvious.
But there aren't many people who take their information from what Trump says. It's more like Trump just says the things that most people of the Right are already thinking.
That's basically what populism is -- real democracy, where the elected leaders do what the people want them to do. It's the opposite of Ideology, where the elected leaders ignore the people and follow some theory of ideal society. Some theory in which everything works perfectly, except reality.