Great. Sounds pretty slam dunk - right? Now, why will no one in the Biden party simply say they aren't real? He has been asked. His campaign was asked. No one will say those simple words. Why not? The campaign contact interviewed (posted by KGF) was ridiculous. Not sure how anyone could watch that and still be so sure? I don't know if they are real or not any better than you do, but common sense tells me the Biden side's reaction to this is suspicious as hell.
Joe Biden has denied allegations and called this a smear campaign. As far as Hunter, my guess is that he is being told by multiple operatives to shut up and not be dragged into this stuff because being public would put more attention on this story which right now doesn't appear to be materially helping Trump.