Where are all the schizos and self-diagnosed narcissists? Me thinks the distribution is off.
As for a narcissist awareness activist, they're not wrong, they are right, and you are an arsehole and it's all your fault!
Schizophrenia on the other hand is absolutely tragic, and it often contains disordered thinking. There is/was plenty of content on YouTube but it wasn't awareness based, rather it was paranoia based.
You're always going to get scammers and fakers, but the legitimate people who are letting others in to their lives to spread awareness is overall a good thing. I would have liked to discover I wasn't alone as a teenager with undiagnosed ADHD. Treatment at that point in my life would have changed it's trajectory significantly.
Neurodiversity isn't a diagnosis by the way, just a catch-all for a group of other disorders.