Your post is an excellent reason why I'd also argue Star Wars: Rise of the Resistance falls flat and feels somewhat dated already. The idea might have sounded good: "There's a new Star Wars trilogy coming out, and we're making a Star Wars land. Let's have the ride take place in the setting of the new trilogy!"
However, when the ride was first conceptualized, only the first movie in the trilogy had been written. The characters featured on the ride had not yet had their story concluded. And people were still curious to see how the trilogy would pan out. But it would take years to design and build the ride, and by its opening, the whole trilogy would be finished. And by their very nature, the ride and the movies would develop separately.
Fast-forward to the opening day: The trilogy, which was concluded a couple months earlier, has turned out to be hugely divisive, with Star Wars fans mostly on the side of disappointment. It is already a textbook example of how messy a film series can become if you set off without an overarching plan, using directors who fundamentally disagree on where to take the story, and writing scenes that look good in isolation but make no sense at all when seen in light of the story as a whole. Its iconography is also somewhat unrecognizable, as it's leaning heavily on the style and aesthetics of the original trilogy (say what you want about the prequels, but at least you could look at almost every frame of them and think "yep, it's definitely the Star Wars prequel trilogy!"). The sequel trilogy has no imagery to truly call its own, it's mostly imitating that of the original trilogy, and leaves little cultural impact on the Star Wars series as a whole. And the main villains featured in the ride turned out to be good guys in the end. One turned out to be an angsty emo with parental issues, while the other screamed a lot, served mainly as comic relief, and died like a chump after betraying the First Order. The ride frames them as these scary, evil guys, but most riders would know that isn't true in the slightest. The true main villains of the trilogy aren't even referenced on the ride.
I mean, I would have been really hyped for Rise of the Resistance after seeing only Episode VII of Star Wars. But knowing how it all ended, there is a dissonance with the ride. The ride tried to capture the feeling of a series that wasn't even finished, without knowing what the lasting memory of the series would become. I may be stretching things a little too far, but judging by the videos it feels like the ride is about an irrelevant part of a rather unmemorable movie trilogy. It would arguably be a lot more timeless if it was re-skinned into the original Star Wars trilogy, as it is lodged in public consciousness in a way the sequel trilogy really isn't. It wouldn't even take a lot of work, since the settings and styles are so similar. Change the helmets of the Stormtrooper animatronics, dub over any lines featuring the First Order to reference The Empire instead, shoot the screen-based scenes again, and swap out the Kylo Ren animatronic for Darth Vader. Most of the ride hardware and all of the story would remain the same.
Conversely, I'd say Flight of Passage fares really well. Nobody remembers the story of Avatar, but it sure had a really nice setting! So the ride doesn't give two hoots about the movie's story, but just frolics in its setting instead. I think this really helps preventing it from feeling dated. Avatar is a movie everyone has moved on from, but it had a unique setting that lingers in memory, and the attraction plays really well to that strength. Rise of the Resistance has a story that arguably is very generic Star Wars, but chooses to set it in the least memorable part of the movie series.