Let’s not forget that Trump is the pied piper candidate promoted by the left to make it easier to win elections. I remember when Ron Desantis was successfully undermined by the news media casting him as weird if he was even covered at all. The left celebrated at the time because they assumed Trump would be easier to beat. When our leaders are picked by their enemies it’s understandable that they’re extremely flawed.
I see it as an emergent behavior where it’s easier to damage than it is to build, it’s easier to undermine an opposition than it is to build up your own side.
I would suggest that political parties stop trying the pied piper strategy but if we are to learn one thing from history it should be that no-one learns anything from history.