Supplemental explanations from unofficial sources don’t excuse a plot holes or continuity errors in movies.
Why not?
Because the creators themselves didn’t explain it. Also the creators aren’t required to obey the explanation from an unofficial source.
unlike Star Trek books, Star Wars books are officially considered canon. So I guess explanations in them do count.
But why does official canon matter to you? Why do you care? I don’t say you shouldn’t; I ask why you do.
I am not sure how to answer that.