You have a good point.

This is also not my personal definition of ''fluency'', but as I have understood it from society and native speakers of different languages. Perhaps my comment was not 100% appropriate to the thread. I just noticed over the years: I could say I'm fluent in english though a native speaker could say they do not agree with that statement. I was commenting under a video in which a deaf person was talking about how people with hearing cannot speak sign language fluently because it is not the language in which they need to communicate their needs 24/7. If that's their definition of ''fluency'' - I get it. And if that's your definition of ''fluency'' - I get it. You seem to have more knowledge of the term so thank you for clearing that up for me.