Matt Yglesias in his May 22nd Slow Boring Newsletter:
the liberal fear of Trump as an aspirational dictator is part of what rightists like and admire about him. They’re not exactly saying he’ll be a good type of dictator. But they are saying they need a fighter, a tough guy, a guy who can battle a rigged system and win – and it’s good that liberals fear him
Fear mongering about Trump’s authoritarianism is counterproductive. His age, his decorum, and– outside of his immigration stance– his policies are unpopular. If you want to beat Trump, focus on these things (especially his policies!)