Well, the quotes from Iger’s new book seem a little more damning than past reporting, but it does also paint a picture of George kinda just throwing a hissy fit because they decided not to use his outlines and being unwilling to judge the final result of TFA on its own merit.
You know how many of the people who hated it were fans who didn’t like the direction the story/characters went in? Imagine how it’d be to be George Lucas and for it not to go in the direction you wanted. I’m sure he was pretty crotchety about it. The irony of course being that they actually did utilize many elements from his outlines. With $4bil the sour grapes seem a little unjustified, but of course it doesn’t seem like he was too terribly upset about it, considering he continued to meet with the directors of all the following films and visit many of the sets.