He is obviously not a total idiot.
But, he sees the world through an incredibly leftist biased lense probably for commercial reasons.
Afterall he has become very rich pandering to leftists sentiments...
Moore is a Rust Belt, save-American-jobs kind of guy. His first major documentary was an attack on General Motors mismanagement.
So, though he's never admit it, he just might be hoping that Trump can do something about saving jobs.