What causes mild error prone speech to get mislabelled as an actual stutter disorder, do you think?

What causes mild error prone speech to get mislabelled as an actual stutter disorder, do you think? This scientific [model](https://www.reddit.com/r/Stutter/comments/196mdrr/the_role_of_classicaloperant_conditioning_in/), and this very accessible [post ](https://new.reddit.com/r/Stutter/comments/1d7tgqv/why_do_we_stutter_more_with_anxiety_and_others/)- discusses this concern in stuttering