Wow, great to finally see the legendary back cover with the red markings!
Yeah, and none of those markings reflect any potential changes to track lineup, so there goes that theory.
That there are no marks about the track lineup is actually meaningless. Only if there had been marks, we would know the final lineup. The marks have their reason in design, and were probably not made by the producer of the music.
The theory that needs to go is that hidden somewhere in the heap of the recordings there is the one and only true 1967 SMiLE album that only needs the parts carved off that would not have been on the actual 1967 album. There is no such a thing.