Not even his supporters today knew if they were going to vote for him back then.
This is completely false, I have no idea where you’re getting this idea. Trump was extremely popular with conservatives in the 2016 election, and conservative voters are famous for toeing the party line even when they don’t like the candidate, so even if they didn’t like him they all knew they’d still be voting for him. There was absolutely no question at all on if his supporters were going to vote for him
Looooot of people are emotionally invested in the idea of karma/people eventually getting what they deserve. It’s really uncomfortable for them to be told that the real world is littered with narcissists and assholes who live a full and fulfilling life, never seeing true consequences for their actions