He could be correct in the following situation…I have not listened to him to know what his thought process was behind the statement or I don’t know if he was fed to say that.
If next government is formed in February, 2024, the next government’s term ends in February, 2029 and the following general elections are going to be held in May, 2029 (assuming everything remains constant). Asim Munir gets an extension of 3 additional years and then retires in November, 2028.
In this case, the government/PM can complete its term.
Of course, this is going to be true if all of the factors remain constant and there would be no surprising events or Asim does not get a better deal from elsewhere.