I've known trump-like kids.They say anything(lie), do anything (cheat), simply refuse to admit 'defeat'. Any humility is fake, to get something. But they aren't really menacing, more like everything is a game and they have moral deficiencies and some pretty gaping flaws to hide (shame) - trump's facade and self-delusion of stern dignity but toddler behaviour.
Some people like trump because he seems 'real' (I've heard sane ppl say that). They can't see that he lies and is also dim.