I think this is a much broader question. Although certainly not a fan of Trump, should anyone really have sole access to a nuclear arsenal? We've all suffered moments of delusion, whether it be through exhaustion, anger, feed deprivation....etc where we can react to stimulus incorrectly.
I agree that Trump seems like a bit of a loose canon occasionally, but I don't feel he's any more likely to hit the button than anyone else. It's not good for business, and that's what he focuses on. BUT....if he ever does, I can almost guarantee he'd say "you're fired" with a stupid smirk when hitting it. haha Cheers all!
RE: Psychiatrist says Trump shouldn't have access to nuclear button