It was all just part of the show
More proof that it was Trump's serious appeal to voters' economic and safety concerns that won him his victory:
These are all things Trump explicitly said he would do, over and over again. Maybe they didn't believe him. He is a pathological liar, after all.
But it is instructive for analysts as they try to sort out what happened. It would appear that a lot of Trump supporters voted for him for other than substantive reasons. Imagine that.