I know it's stupid to hold a specific interpretation as the correct one and try to force that on others, but I hope you can at least empathize with the feeling of watching something you like morph into something completely unrecognizable.
Oh, we can certainly agree about that sort of feeling. I am very much not a fan of the Disney sequel trilogy, for example, and seeing them enthuse about how it's all part of the "Skywalker Saga" and how Rey is the true "chosen one" and all that rot is just awful. But still, the "let's see if I can make it make sense" part of me has still had some fun with trying to fix up even small bits of that pile of wreckage.
I'm not even a fan of the prequel trilogy, despite the retroactive "redemption arc" they seem to have received in recent years. I think they're still pretty bad, they just got a coat of polish in the form of the Clone Wars and a "this is what bad really is" comparison to stand next to in the form of the sequel trilogy.
set in a fantastical but ultimately very shallow universe
Shallow puddles are still fun to splash around in. :) Sometimes the shallowness actually gives me more flexibility and fun in theory-crafting about it.
Anyway, there's room for all sorts of fans, and I'm sorry that you're feeling alone. I'm sure there's others out there that share your view, it's probably just a bit hard seeing them with the current amount of activity from the other kinds of fans.