I know why the Dems/Libs don't care about this story even if Biden wins.
If Joe Biden ends up getting implicated officially in some kind of quid pro quo or money laundering scheme after the election...it will give them a perfect excuse for replacing him with Harris...and if he doesn't get implicated officially, they can still fall back on that "commission" they want to create that can vote on replacing the president simply if they feel he is no longer competent...and Joe is already incompetent or at the least not able to handle the rigors of the presidency, considering how much time he needs to spend each day napping in his basement.
So they don't see how it would hurt them either way...and if Joe doesn't win, well then it won't matter to them what happens to Joe and this scandal.
Joe will either be their sacrificial lamb or he will be expected to fall in his sword...he's just being used by the Dems/Libs because he was the only one they could sell to their more conservative Dem base, that see's Joe as "good old grandpa" and not much of a threat, unlike the more radical loons that were trying to get nominated. They need that more centrist Dem base to have a chance at winning, because the country as a whole is NOT really hard-left leaning...rather it's more centrist, for both the Dems and Reps.
They will use Joe like they use BLM and the minority vote...to get them into office, and then discard or ignore them afterwards, like the Dems have done to black people for many years now...and for some reason, they still get the bulk of the black vote.