Politics is complicated, and depressing and difficult to learn about. When a reality tv host hires the most corrupt public relations team he can and pitches it to a pro-wrestling level demographic a lot of them respond. Anti-intellectualism as well as people just sick of the system that in general, Republicans have pushed to make as frustrating and unusable as possible over the past 20-30 years.
Also not voting for him but I have to know a lot of them for the work I do.