There's always people saying "this isn't about Hunter." Yes, we know. We all know. BUT the point is there are numerous areas of Hunter's life that intersect with and reflect upon Joe. Did Joe break the law or do some extremely shady things in conjunction with or for the benefit of himself or his family?
The people involved are distinguishable (this person is Hunter, this other person is Joe), but they are very intertwined in numerous domains that are extremely relevant to Joe's ability to govern, let alone be trusted to the minimum degree necessary to be president. And, anyone who's been shown to look the other way when it comes to child sexual abuse does not deserve to be president and can't be trusted in that role as their moral compass is beyond fucked.