As wildly different as Harris and Trump are, their campaigns seem to share a degree of indifference to the specifics of what their candidates are saying, because both campaigns realize that many of their voters are unconcerned about such details—or, at the very least, are unlikely to be moved by them. What matters to many voters right now is their hatred and fear, however justified, of the opposing candidate, and the fun they have calling the other side weird, dangerous, and deranged.
I don't really understand your response. Of course I know why it's that way. The only way I can see to change it is widespread refusal to vote