It's some sort of conspiracy Jedi mind trick thing. "You've never seen this film before" "This orphaned future Jedi on this desert planet is totally different than Luke Skywalker" "Jakku isn't Tattooine" "the Starkiller base isn't the Death Star" and then there's that whole Jedi master on a self-imposed exile waiting to be found by the galaxy's last hope.
Yet you still have everybody acting like this new film is so great and innovative.
you forgot to add a sought after droid with a very valuable piece of information.
To be fair, the entire concept of the first Star Wars was based on The Heroes Journey and the idea that all heroes in western fiction have the same story arc... And beyond that, Star Wars itself wasn't based on original ideas so much as a cocktail of influences. So in a lot of ways, the idea of essentially remaking Star Wars with a new cast of characters stays true to the core of the series.
And it's not like that style of sequel is new. James Cameron's movies Aliens and Terminator 2 are considered two of the greatest sci-fi sequels of all time-- the latter is even considered better than the original-- but both are essentially beat-for-beat remakes of the originals, with more characters, bigger effects, and higher stakes.
Another instance would be Spider-Man 2. Considered better than the first, but its basically a remake.
And, of course, on the subject of the Marvel films there's the fact that Iron Man is basically a remake of Batman Begins:
The movie opens with our billionaire hero imprisoned overseas, we then learn who he is through flashback, after the flashback our hero uses tools/abilities given to him by bad guys to destroy said bad guys' lair in a fiery explosions. The hero then returns home, pouring himself into perfecting the tools/abilities he gained and crafting a persona about them.
After an action sequence or two, our hero receives a lecture from his closest confidant about risking his life and abandoning his family business. Almost immediately after said lecture, the hero is attacked in his home by his shady mentor who turns out to be the main villain. Said mentor/villain leaves him for dead in his house, where he is rescued by a helper character. Our hero then suits up and races off to both rescue his girlfriend and stop his mentor villain from using his companies technology for destruction. During the climactic battle, our hero has a supporting character set up a trap that kills the villain in a fiery explosion.
Same movie. Doesn't make Iron Man any less good.
