Yes, of course it's bad. The people spoke in Greece and in the UK too, and they messed up in both cases. Politicians have become "entertainers". The most successful politician/entertainer is the one who gets most of the voters of his party out to vote. That's all it takes to win an election. You don't need to have a realistic political platform, in fact you don't need a platform at all. As it was proved by Trump you don't even need to say anything of value, just say stupid things, lies, whatever comes in mind, and then the next day say the complete opposite. It still doesn't matter. As long as you get the sheep out in droves to vote you're still good.
It happened in Greece, it then happened in the UK, now it happened in the US too. This is not good news for democracy...
I understand your confusion.
"You don't have to say anything of VALUE"... but what exactly is a value? Is there such a thing as objective Values?
Well there isn't. Nothing has ANY value in NATURE. Value is a cognitive construct that exists only in the mind of the sentient being that does the evaluating. As such all values are totally subjective.
Someone may be "Saying Nothing of Value" according to your evaluation, which is based on what serves you best of course. What is of no value to you may be very valuable (beneficial) to somebody else. And who says that your interest is above his?
Democracy is meant to decide what is of Value to a society and what is not. The contest took place, according to the rules, and those who wanted it more won. Now they have a President who'll, hopefully, lead in accordance with the values he campaigned on. The end.