I was asked this question.
He's scary because he's not bright enough to be President of the United States; he's scary because every interaction he's had with the public since January 20 has been that of an impoverished mind obsessed with himself and how he still harps on media coverage of his winning even though he won; he's scary because his henchwoman Conway told the public there are "alternative facts"; he's scary because he talks of war like it's a child's game, a cartoon in which massive death is not real; he's scary because the energy behind every action we've seen him do comes from Bannon, a smart, educated Nazi bent on division and the dissolution of democracy; he's scary because he convinced a great deal of the American public that he cares about them, when he only gives a fuck about himself. As for the cultivated opinion of celebrities? Some of those people are obviously idiots, reality show stars, much like Trump himself, a celebrity who starred in The Apprentice. But if you love any books or music or movies or whatever, "entertainers" give to the public, and many have imaginations and their minds are cultivated to think critically about issues. They are not automatons programmed with entertainment. It takes thought and a lot of fucking work.