I don't know if I agree with that thing about friends. I grew up with undiagnosed ADHD back in the day because it really wasn't a thing then. I cope with it now too and keeping friends because I get bored never would have occurred to me. My wife can identify it, but she can't diagnose it because she is not a medical doctor. I read her reports and recommendations and I have never seen her reference keeping friends as a factor. Doesn't mean it doesn't exist, just not in my experience.