In many ways, Trump and Biden are cut from the same cloth. They are both old, rich, white guys used to power and privilege and to using it in "traditional" ways (such as accessing women's bodies without their permission). They are both casually racist and sexist, not even understanding most of the time that what they've said is offensive or wrong. I'm definitely not a fan, but I will hold my nose and vote for him as the lesser of the evils.
I wish we could do better, but sadly, I think that part of Biden's appeal to many voters is that he represents the traditional patriarchal dominance hierarchy too. These voters may resonate with that subconsciously, believing that they want something more progressive in their conscious thoughts, but then not truly ready to embrace it when the rubber meets the road because as dysfunctional as they are, the old ways feel most known, and therefore, most comfortable.