Earlier quoted context omitted.
I agree that the dynamics you describe account for some of the reason Trump's base is primed to latch onto him. But as far as Trump himself goes, he's not really a Republican. He is solely concerned with receiving praise and feeling tough. There is no master plan; that is really all there is to it.
> But as far as Trump himself goes, he's not really a Republican. Yes, he is. He may not have a particular devotion to an ideology you'd like to pretend defines the Republican Party, but the US electoral system structurally produces duopoly between parties too broad to have coherent ideology.
To put another way, if you averaged out the beliefs of all who consider themselves Republicans, Trump himself doesn't believe most of it, certainly not dogmatically.