I agree that movies are simple entertainment, but people get invested in the story, the characters and so forth, the reason they do that is because they are interesting. And Star wars along side Star trek is the most iconic science fiction there is to date, so you should expect people to get a bit upset, and I want to make it clear that im not really a fan of any of them, meaning having Star wars all over the place etc. But I grew up with them and have watch the original ones countless times.
So when companies decide to continue the story and show no quality to lore, details, characters and then release, what is it now, 5 movies in a row? that shows nothing of this, Rogue one as you said is by far the best, but is just rendered pointless due to the other Star wars movies, as they can just hyper jump into each other. There seem to be no care for details or anthing and It becomes clear that this is not really about Star wars and making good movies or caring about it. But simply about making money, get as many movies out there as possible to milk the concept. It not like it difficult to find really hardcore Star wars fans, that knows everything about the lore that could have guided Disney in it. And if people do not care about the quality of movies and these things, then they will simply continue to release these movies with really poor stories, uninteresting characters, which is nothing more than 3D effects.
Lucas is not free from critic, those he made (1,2,3) as I said were almost as bad as those that Disney made. So Im not in anyway defending him. I do however think the main reason his failed, where that he wanted to make them sort of like the original ones, so he needed a clown character like Jar-Jar, to carry that role for the C3PO and R2D2. But it just went overboard, with Anakin also constantly having to make jokes and stupid comments.
But to be honest I think what really backfired for them, were the release of Lord of the rings, with it much more serious and dark approach to a fantasy story. And people really like it, so when the first Star wars movie launched and people saw all these one liners fired off one after another, it just seems bad. You have the whole Pod race in it, that takes like 40 mins or so, which only purpose were to promote an upcoming computer game. There is no reason why this should take such a long time. The enemy droids are mostly just a joke. So adding it all togther its such a lazy and lackluster story, compared to something like Lord of the rings, which I think shares a lot of the same viewers and people like that a fantasy story were taken seriously for once. Remember that in the original Star wars movie the comedy is quite elegant added to the movies and is not forced down your throat constantly, but at the same time it doesn't ruin the seriousness of it, which to me at least, is why it works.
So I have only watched Lucas new movies (1,2,3) maybe two times. The Disney ones, 1 time each, might have watched bit and pieces, but they really don't entertain me. The original ones, I don't know how many times I have watched.