I think the problem is that a lot of political discourse is super constrained, most of these polls are “do you like trump or like Biden” there’s no option to express the opinion of “I hate both of them but one slightly more”. Of course that’s going to create weird results! If they have to twist the answers to get there displeasure across and scare the DNC in to taking them seriously, that’s what they have to do.
I think there is possibly a dissonance being created by how lobby money influences the thinking of campaigns. Say voters care about reducing fossil fuel dependency, say they care about ending support for Israel, say voters care about ending for profit health insurance, say voters care about breaking up corporate oligopolies, these are all toxic pills to many donors. Campaigns don’t feel they can endorse or condemn these things, so they refuse to even engage with the topics. These incredibly important political issues are just... removed from official political discourse, thus such things are kept out of the polls or reduced to anemic platitudes, so people can’t accurately express what they care about.
Younger voters are pissed at the democratic establishment and there is no statistical data based way for them to measure why. So the democratic establishment is left flailing in the dark, boxing with ghosts because they’ve blinded them selves to issues that pit their continents against donors. WHICH ARE THE MOST IMPORTANT ISSUES FOR MOST YOUNGE VOTERS.