Trump has dared do many things that political correctness has been attempting (and largely succeeding) to intimidate the body politic out of doing. He is breaking the hypnotic spell. That gives him a huge amount of goodwill and that insulates him against lampooning. Lampooning works better against figures who have worn their welcome thin.
He also insulates himself by doing his own lampooning.
The primary weapon of the left, since they can’t make an intellectual argument (there’s no intellectual grounds for their positions and their appeal to their 2 audiences are “free stuff!” for one part, and “We should rule everyone” for the other), is ridicule.
Trump has shown himself to be impervious to it, even turning it around (I’m rubber, you’re glue).
And the left are apoplectic. What a wonderful sight, whether you support Trump or not.