I have no doubt that Stephen is sincere, and that he is telling 'the truth' as he experienced it.
I am not as dismissive of Sir Paul (Billy) as he is though. That is to say, I am not convinced of Faul's villainy
in taking on the role of Paul as Stephen feels that it is. I believe that the powers-that-be of the time were intent on finding a Paul replacement,
and would have found someone to do it, even if Sir Paul had refused the role. However I think it goes a bit deeper:
Years ago, when most of us were still at the TKIN site, someone who was 'obviously' 'in the know', advised us all that to understand PID/PWR,
we should compare it to the myth of 'Apollo and Hyacinthus'.
Here is a quick version of that:
"Hyacinthus was a mortal in Greek mythology.... He was a beautiful young man who became the lover of the god Apollo,
although he also had the affection of Zephyr, the god of the west wind.
During a game of discus, Apollo threw the discus, and Hyacinthus ran after it trying to impress the god. However, he was struck by the discus and died.
According to a different myth, it was Zephyrus who caused the death of the young man; jealous of his affair with Apollo
he blew the discus to Hyacinthus' head, killing him. Apollo, distraught at the youth's death, forbade Hades to claim his soul;
instead, he turned him into the flower of the same name."
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But that version leaves out the most relevant part, which can be found at
the link that the TKIN poster used, as follows:
"The god
(Apollo), as pale as himself
(Hyacithus),
raised him and tried all his art to stanch the wound and
retain the
(fading) life, but all in vain;
the hurt was past the power of medicine.
As, when one has broken the stem of a lily in the garden, it hangs its head and turns its flowers to the earth,
so the head of the dying boy, as if too heavy for his neck,
fell over on his shoulder.
"Thou diest, Hyacinth," so spoke
(Apollo),"robbed of thy youth by me.
Thine is the suffering, mine the crime. Would that I could die for thee!
But since that may not be,
thou shalt live with me in memory and in song.
My lyre shall celebrate thee, my song shall tell thy fate,
and thou shalt become a flower inscribed with my regrets."... "
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In this instance, one could speculate that Paul is Hyacinthus to Faul's role as Apollo. It seems to fit.
This would explain, in some measure, why Faul went along John, George, and Ringo with including clues about Paul being dead in the music.
Stephen accuses Sir Paul of trying to cover up Paul's death and replacement, but there are clues about it both in the Beatles' work and Sir Paul's
solo and Wings songs. If anyone is trying to cover up Paul's death at this point, it is probably more people with a vested interest in having it hidden
than Sir Paul, whose actions appear to match the pledge of Apollo to Hyacinthus.