You're somewhat implying this but I'm not sure if you know it exactly but others might find it informative...
The reason for that is that the "disorder" part of it is a requirement that it get in the way of normal living. You can have anxiety but if you take a deep breath and you can overcome it, it's not a disorder. If that doesn't help or even if you just haven't tried it, it's a disorder.
I wish some psychiatrists knew that. I had a recent conversation with at least two who do not. One of them is around 35 years old (so quite young).
These days they call hobbies (like drawing) a "distraction" or go as far as call it an addiction. They are so out of touch with the literature and science with regarding to psychiatry, it is wild.
The reason for that is that the "disorder" part of it is a requirement that it get in the way of normal living. You can have anxiety but if you take a deep breath and you can overcome it, it's not a disorder. If that doesn't help or even if you just haven't tried it, it's a disorder.