It is a survey by https://mclaughlinonline.com/
They are clearly hyper partisan, but being charitable that should be fine, we just need to see what exactly the survey methodology is, I can't find it. Wonder why.
Or its just obviously nonsense and we can ignore the crazy person?
It's a pointless strawman anyway. He's clearly not the one making the decisions, so it doesn't matter if he's sane or not. A big chunk of his cabinet is equal to Obama's as well. And before you come in with "but Trump did X". Yes, Trump was an idiot as well. Different people can be morons at the same time.
Or its just obviously nonsense and we can ignore the crazy person?