Lucas is obviously an extremely talented film-maker (and he was a genius when it came to tie-in marketing and monetizing his franchise… but that’s another topic).
He’s a fantastic producer, editor and is clearly a visionary when it comes to effects technology (visual and audio).
I actually think he’s a great high level creator of stories as well.
Where he ended up struggling was in the director’s chair later in his career as well as with script-writing.
I think the PT could have been really good if he had brought in other director(s) and had more help on the script and dialogue (IIRC there were issues with people who were members of the director’s guild working on it because they don’t put credits at the beginning of the film or something).
Yeah - there’s stuff in the PT that sucks, but I don’t hate Lucas for it… I think he tried; he just didn’t succeed as well as we would have liked him to.
The only thing I really get pissed at him about are some of the really stupid (and pointless) SE changes. Greedo/Han, Han stepping on Jabba’s tail, Vader no… etc. I could probably even live with some of the more annoying SE changes if he had just left out the character ruining ones.