I disagree with her that things will go swimmingly for whomever the Democrats substitute in Biden’s place IF they can push him out. Biden had the best poll numbers of any Democrat consistently. They’ve already run polls for others like Heels Up and Gavin Newsome and Buttplug. They were consistently WORSE than Biden’s numbers.
Also, good luck trying to just skip over the Black Female with the Democrat voter base.
When the DNC decided they had to stop Bernie from getting the nomination in 2020, they turned to Biden who was just as stupid, just as corrupt and almost as demented as he is now, because they didn’t have anyone else they thought could win the election. They have a similar problem now, trying to find someone who can beat Trump.
Probably the Dems feel conflicted over forcing out Biden because he is the only one considered moderate or "old-school mainstream." They won't find anyone there under 60 who isn't left-wing. Or even under 70.