I wonder if people actually think he's going to do what he said. The guy has a history of talking bullshit to get what he wants. He just said all the right things and made a bunch of promises to become president. He doesn't care about following through. Why would he? His promises were a means to an end. Trump has a history of fucking people over and now it's our turn.
On the other hand, the guy is obsessed with winning. He pulled off the craziest victory in a presidential election that anybody can remember. Now that he's there, I can totally imagine that he's thinking "not good enough, now let's be the best f-ing president! I'll show them!".
He got the keys, might as well try to do some of the things he promised and win again.