Given that they used depictions of real people, I think that’s fair. Unique concept, making a Soulslike region safe after clearing.
The thing is, this change apparently creates plot holes and undermines the original story.
spoiler
From what I can tell, (some of) the bosses you fight are the resurrected versions, that have become corrupted, because you’re not supposed to bring people back to life. The story is about accepting the death of a loved one and breaking some kind of cycle (because you’ve been going back in time repeatedly, trying to revive someone, or something like that).
Now, your character is still supposed to accept you can’t bring people back, but the resurrected emperor or whoever is fine and just lives happily ever after, with no side effects.