Democrats really need to stop underestimating Trump if they want to win in 2020. Don't get fooled by his offensive and primitive style that is just a theater for public. He's without any doubt at least in top 10% most intelligent people in the US. Just because you're not his target audience doesn't mean he's stupid.
So all his self-destructive behavior both before and after becoming president is part of a master plan or something?
It worked for him in the primary and general elections. It might work for him again.
It is both sad and hilarious that people think that Trump is putting on an act.
He is a stupid, incompetent bigot. This is who he is and has always been.
People can be bigots, egoists, evil etc... while still being highly intelligent. You're confusing somebody who holds opinions you don't like with somebody who is stupid. He talks the way he talks because he knows that in order to appeal to masses you have to speak in short simple sentences.