The way I see it is, the youth were super excited about changing the shitty situation that faced them, and the prospect of having Berny Sanders as president, who also wants to change that situation, and they had that ripped away from them, so they were radicalised, they spend 4 years with a senile old man, who did nothings to change the staus quo, and so they voted naively for the candidate who proposed change.

A banker is true neutral, he follows the money.