The problem with FFX-2 is that it is a sequel to FFX. It rearranged the characters of the game, messed around with the established rules of the universe, and undid the powerful and bittersweet ending we were left with. This is why so many people have a problem with it.

I don't think you can analyze it outside of that context. If we're just adding up the sum of the parts, then I would probably love FFX-2. But there's more to consider than that... Such as the fact that they completely changed a character who already had a lot of agency.