If it seems outlandish or hyperbolic, it's likely not 100% serious. And if you can't make that distinction between anything Trump says (believing it all to be either 100% serious or 100% outlandish), the problem likely lies with your failure to comprehend views unlike your own. If so, maybe try getting out of your bubble.
The problem with Trump is that much of what he says is outlandish, or - more often - just plain wrong.
If you're advising that he should rarely be taken seriously, no doubt you'll get lots of agreement about that. On the other hand, the problem is that he's the President, so what he says
ought to matter. What's the point of having an incompetent idiot in the White House?