To me, Lucas reminds the type of a fan fiction writer who puts his works in databases and asks for feedback... but awaits nothing but positive comments, e.g. the type of fellow to whom it's enough that he himself likes his works.
Now, if you go in and tell him it's decent stuff, maybe even good, but there are points here and there you could add in more or take out or edit somehow generally to make it even more better... and he attacks you, telling you something about his artistical liberties or separate point of views... or practically says out loud its his story, not yours.
But these guys still tend to do it because they like what they do and enjoy it... so they're not that bad.
Of course, can't really say Lucas would have done exactly something like this, but if he would like to please the audience more, it could be useful for him to consult another professional writer who is in reputation of being a good one. Not because he thinks no one can know SW better than he does, but to get hints about how to polish the basic aspects of structure and such every piece of fiction has.