I get it, George isn't necessarily wrong. I kinda feel similarly about the sequel trilogy in general. I am enjoying it, but I wish it were a little more fresh. The prequel trilogy being received poorly doesn't invalidate that sentiment. George is bursting with fresh but he needs other people around him to refine his ideas. With refinement we got the OT, without refinement we got the PT. Same dude both times, but different levels of limitation and collaboration.
George created a wonderful new toybox with the prequel trilogy that other people like Filoni took and did greater things with. He definitely expanded the universe with fertile new land. He just didn't execute well on his own when given unquestioned control and limitless resources. The collaboration is what made it work. Imagine if the prequels had Marcia Lucas and Kasdan around.
Whatever his ideas for the sequel trilogy, I'm sure they were not all great, but I'm sure he had some bangers in there too.
However it does seem like a few of his ideas did end up coming through. And those are some of the best features of the sequel trilogy so far. Rey, Ahch-to Luke, and Kylo Ren all have roots in his draft ideas from the limited information we have.
People argue back and forth as if prequel-bad and ot-good are the only binary choices when making a new star wars movie. Personally I'd love if we got something as fresh as the prequels but with the slicker execution of the originals or sequel trilogy. The ST hasn't expanded the universe very much, mostly just played within its existing constraints. That's a bit drab as a premise.
But I don't blame Lucasfilm for playing it safe. We all know the star wars community is a very incendiary crowd that was still reeling from the prequels.
I just hope that whatever Johnson's trilogy is, it's at least a hundred years disconnected from the Skywalker saga and that if I even see an X-Wing it's in a junk pile at a scrap yard. Let's find some new land again.