Suff wrote:We cam be without ministers but no PM, no government.
Where do you get this nonsense from?
If there were no ministers we would have a dictatorship, but even dictators need department heads (Ministers) as no one person can run everything. Some cannot run things even with 23 (sycophantic) ministers, as we have just seen. Also, for a short time we had government by cabinet when Johnson was incapacitated in intensive care and unable to carry out his duties.
The PM cannot decide who the next PM will be. They can resign or be replaced as the leader of their party, but they cannot choose their successor. That is down to the Privy Council who advise the Queen who it c/should be. She cannot just walk in and say "Sharon's the next PM." The convention is that the leader of the largest party in the Commons becomes PM... if they can form a government.
Blair always said that Brown would take over when he retired, but even then Brown had to be elected as leader of Labour in order to become PM, he couldn't just walk into the job.