I’m not attacking you, I’m criticizing your analytical approach. You’re starting from the values that you think should matter to people, then faulting them for not making decisions you think are rational according to those assumed values.
Your dismissal of “identity politics” is a good illustration of that. Identity is a dominant force in politics! Around the world and throughout history, identity trumps almost everything else when it comes to conflict between humans.
I mentioned the demographic factors because those demographics (young white women and young non-white men) had notably different trend lines in the last couple of elections, despite having pretty similar economic circumstances. It’s worth considering whether those kids aren’t irrational and actually just value different ends than what you think they should value.