It has been for so many years. In the face of this evidence, the thought that Billy Shears could be Paul's replacement seems faintly ridiculous. When the album is held upside down, the word 'Beatles' spells out the phone number of a London mortuary. Obviously, this couldn't be a mere coincidence. Also, one more clue from Sgt.
Pepper needs to be discussed.
On the front cover, someone holds a hand over Paul's head. The front cover of the Magical Mystery Tour album features one other clue. Walruses are death symbols to Scandinavians. Or perhaps Falkland Islanders. IF he had lived.