I think Trump is scum, a lousy human being in literally every way, but I'm not a fan of the Trump-is-Hitler stuff. It's overblown. There's enough to hit Trump with that you don't need that.
Hitler was consumed with hate, guided by it, planned his life around it, endured hardship (like going to prison and writing a book without a ghost writer) so that he could reach his evil goals. Trump just doesn't have that sort of focus, and he loves himself too much, loves his own comfort, to sacrifice anything for an idea. If you're going to call him Hitler, at least soften it by calling him a lazy, stupid, unambitious Hitler.
Not to put to fine a point on this, but Hitler himself would be insulted by the comparison.