A lot of disorders and syndromes are really just normal things that everyone deals with. They just a lot more than the average person. It’s like the nepo beach baby who claims they’re depressed because they don’t feel happy sometimes. That’s not depression, that’s boredom, you’re bored.

Same thing with autism. Someone can be a fan of trains but realizes that a random person doesn’t want to have a conversation about them. It’s the scale and scope of the behavior/disorder that defines it. Not merely having that characteristic at all.