If they keep bashing Biden, it may be a signal that the move to replace him with Kamala is not far off.
If Kamala becomes President, it will be interesting to see who she is told to select for the new Vice President. Some token like Buttigieg or Booker who could be impeachment insurance because no one would want that person as President, or someone marginally competent who might have a shot at winning the 2024 election? (Of course they probably figure that they will be able to cheat again on a massive enough scale that even Biden or Harris could win.)
Booty-Gig will be the VP for a while, then resign, AND defeat Kamalamadingdong in the 2024 primary/caucus. Booty-Gig will lose to DeSantis in the Nov. election.