I think there's a lot to be said about The Curse™️ and even though I'm one of the people who thinks it's an interesting concept - it's evident the game really didn't know what to do with it, as it because more and more mindboggingly unclear what it's actually capable of the further the game goes.
It's a really good metaphor for the patriotism Erebonians have; but it gets used as the blame for literally everything despite the game trying to tell you it's supposed to be a devil-on-your-shoulder kinda thing that merely accentuates negative emotions.
No matter how positively you try to approach it, the way it's applied is not great.

That being said, I believe the game more than makes up for it. Once you're aware of the issues it has and focus on the things it does well - you'll find there's plenty of stuff to enjoy.
It took me a replay to really get over my grievances with the game because I was definitely one of those fans that solely looked at it's flaws, but ultimately I still think it's a fantastic conclusion to the Cold Steel arc with a ton of fan-service for long-time fans.

It's not perfect, that's for sure. How divisive it is should make that evidently clear.
But that doesn't stop it from being damn good fun - and at the end of the day, I'm more than satisfied with that.