It took me a while to understand that Trumpism isn’t really about the issues. Not even the issues of anti-immigration and protectionism. It’s about the Chosen One, the Great Leader, the Messiah. When people think things have gone badly wrong, they often turn to someone who will set them right by taking command.
The outrageous things he does have only increased his popularity. He boasts, “I could stand in the middle of 5th Avenue and shoot somebody and I wouldn’t lose voters.” When this mentality takes hold, there is no right or wrong for the Leader. When he does outrageous things, that merely proves nothing will stand in the way of his will.
Caesar, Napoleon, Lenin, Hitler, Castro, Khomeini: They’ve all known the trick of harnessing the tribalist mindset. The specifics they offered didn’t matter so much as the promise that nothing would stand in their way. They can’t do anything horrible enough to turn people against them, except for failing.
Telling Trumpists that he’ll do horrible things or that his policies will hurt everyone is beside the point. They expect him to “make America great again” by sheer force of authority.