In my opinion:
The reason they didn't oust Joe as President and allow a succession to take place is that Kamala isn't qualified to be President (her parents weren't citizens when she was born) and this would push Mike Johnson (R), who is Speaker of The House as President of the USA.
Thoughts?
Also Kamala is dumb but not dumb enough to take the job.
JOHNSON CAN BE REMOVED WITH A SIMPLE VOTE. And they can vote any American citizen as speaker of the house.