I think y'all way overestimate how good all of these other coasters are when it comes to narrative and story.
Story of the Yeti understood to the average guest: I'm on a train into Everest/FM and oh no a Yeti!
Story of BTMR to the average guest: A train ride through a dessert.
Story of Hagrid's to the average guest: Muggles are allowed to go through the forest and oh no blast ended screwts!
Story of Velocicoaster: You are riding with a bunch of velociraptors.
I really don't think any of those do it "better" than Cosmic Rewind except for Hagrids...Which is pretty universally regarded as the best ride Universal has done up to this point. I don't think Cosmic Rewind has to be better than that on the one specific area of storytelling or else be considered a failure.
If Hagrid's being a better "storycoaster" than Cosmic Rewind makes CR a failure, fine, but that seems absurd.
The coaster part is not "poorly executed." It is set up well, everyone gets the gist of what is happening, and you are constantly looking at cool scenes of a very Guardians style battle. That's all the story "needs" at that point just as much as all Everest needs is nice mountain scenery and a Yeti appearance. Again, aside from Hagrid's, what coaster does it better and how?