How do you gently respond to someone who labels their self or others as OCD just because they are very neat or like to stick to a routine? On one hand, I wouldn't want to gatekeep the label since not everyone has access to a professional diagnosis, but on the other hand it bothers me to hear people diminish the struggles of OCD by throwing it around willy-nilly.
I've brought it up with someone who did this, but they got defensive and expressed that I was being pedantic and condescending, and that it didn't really matter how they used the term OCD. I even suggested they check out Hard Quirk since its supposed to be a resource for people with OCD, but at that point they just seemed offended that I had brought it up and they weren't interested.
I find that it's difficult to convince people to stop using language if they never previously thought of it as harmful and there isn't a lot of cultural pressure. Is there a gentle way to bring it up without seeming accusatory? I don't want to start any fights over it, and I also realize that I don't really know what's going on in everyone's head.