I think what is actually going on here might be in part conditioning people for dumping Biden after the election if he wins. The campaign trail will have just taken too much out of him and there will probably be reports of him having a stroke or something.
I dont think the timing is right to be preparing the public that Slow Joe is going to be replaced.
I think this is about lining up the MEdia to try to influence the public that if ( when) Trump wins, he should be declared unfit before the inauguration.
This of course is going to take the full support of the WH Medical team AND the VP. Regardless of how many quack medical experts Pelosi drags before the House for “ hearings”. Even Fauci if he is that corrupt.
If somehow this treasonous coup succeeds Pence is Pres and he picks a VP. It would never be Pelosi.
Having succeeded in a flaky impeachment based on an invisible whistle blower may have emboldened her. But unlike impeachment, she is not the lead dog in this process.