But it's still a thing. Maybe you can't refer to it as a disorder, but you are hallucinating stuff. It's a set of material facts about your mental state.
Some of Donald Trump's various disorders have objectively rewarded him, generously. But he has those conditions. He doesn't not have narcissism just because his narcissism is good for his bottom line.
I think the issue is that medical criteria are functional- what should doctors do about this. If it's not even bad, they shouldn't do anything! And this gets translated as "nothing is there to treat" but shouldn't be translated as "nothing is there to notice"