Wait, so they're claiming now that one of the most hated plot points, that made zero sense with the established narrative or character, in the story we know they had no plan for, was written by multiple different people, changing while filming, that George Luca's and Mark Hamill themselves have criticised and strongly implied they were unhappy about, was actually what George Lucas planned all along?
If true, that is one of the most contrived and convoluted pieces of random coincidence I have ever heard of. That's full on infinite monkeys with infinite typewriters bollocks.
No, I just cannot buy that. That's too insanely unlikely to have happened by pure chance, and we know it wasn't on purpose.
The simplest explanation is that this new book is lying, or at the very least bending the truth to the point it's completely misrepresenting things.
In a time when the dictionary can't be trusted, I sure as hell don't trust Disney not to be trying to pull a fast one here, especially not given the state of their financials and total collapse of the Star Wars fanbase.