Pardon me? Isn't questioning and analyzing artistic endeavors, film and otherwise, a part of engaging the work? Monday morning quaterbacking is part of the process, isn't it?
I like GL, a lot, and harbor no ill will against him personally. I think he made the films that he wanted to in the PT, and enjoyed the process. I think they are professionally done, high-polished, ground breaking in terms of the technology, but lacking in character creation and directing.
The ideas are his, absolutely. But, having collaborated with others on film projects and the like, and other creative ideas, it doesn't happen in a vacuum. The original Star Wars was an exercise in this. GL was constantly revisiting drafts and concepts (Utupau, Mace Windy, Starkiller, and the like) and updating based upon different inputs and influences.
It may be his ideas, but I certainly don't have to agree with the final product. Same can be said of any artistic work put to the public.