Yeah I hear you. I also am fluent a lot of the time (after years of speech therapy), which I think is why so many people assume that when I say "stutter", I mean it in the casual sense and not the clinical sense. For example, I get asked to lead a seminar/workshop/do public speaking, and since I don't feel ready to, I disclose I stutter so I don't seem simply disinterested, and am told by someone fluent "oh I do too, everyone stumbles over words sometimes". I'm not looking to assess whether someone else is a stutterer, but to reliably communicate unambiguously that I have a speech disorder in situations where that's necessary.