Nah - Harris would be the one to fill those shoes.
I really think Biden picked her to protect himself, because he knows Repubs wouldn’t dare impeach him knowing she would end up being POTUS if they did remove him. Eee ho lay, you’re right, her as POTUS would be beyond a nightmare. Can you imagine having to listen to this laugh for 8 years? Kill me now!
https://www.youtube.com/watch?v=Spc_hRIGB8M