No sane individual can possibly think his "edits" to ROTJ made the film better. The reason he made the special editions, IMO, was two-fold:
1. Test the technology available to see if it was ready for the prequels.
2. To release them in the theaters and later on video to rake in the cash.
Were there minor things needing correction in the movies? Yes. Was what he did to ROTJ necessary? Absolutely not, and the changes were so monumentally bad that they have tarnished the movie forever. Seriously, my six-year old niece wouldn't have done something that stupid. If you want to sit here and claim he made horrific changes like that for "artistic" reasons and not financial ones, be my guest; I think that makes him look even worse.
Honestly, the edits that King George made to ROTJ over the past 15 years are the main reason I ranked it below A New Hope when I posted my ranked order (the only correct one, by the way). First he adds in a bunch of random CGI shit where it isn't needed and doesn't advance anything... OK, whatever. Then he extends the ewok dance number at the end. Weird, but OK I guess. Then he superimposes Hayden Christenson over Sebastian Shaw (the "old" Anakin Skywalker) in the final shot. Wait, what the fuck? Why? It's not like they replaced Alec Guinness with Ewan MacGregor, so it's not like Jedis resort to their young selves in their ghost image. What possible reason was there for that shit? And then there's the "NOOOOOOOOOOOO," because apparently Darth Vader lifting the emperor up and heaving him off a balcony (spoiler alert) wasn't enough to show that he was against the torture the emperor was putting Luke through. I mean, seriously, did no one stand up to Lucas and say, "umm, hey, we've checked out this edit, and, ummm... it's garbage. It's absolutely the worst thing you've ever put on film. Like, take Attack of the Clones and cross it with a video of Chris Brown beating Rhianna while raping a puppy whose owner died in the holocaust... that video has better audience reaction than this shit. Seriously, did you huff like 2 billion dollars worth of
all the drugs before you did this?"
So, yeah, George probably shouldn't stick around much past the "hey, a sword made of LASERS would be AWESOME" stage of the creative process.