This question is in specific reference to this question about how well the JLPT test reflects ability. However, this could apply to any question about fluency or credentials.
Just to make clear my motivations, I also intend to take the JLPT 1 this year, and I am both willing and able to discuss the merits and demerits of the test at length. I could also engage in conversations about what constitutes fluency as I find it an interesting topic.
So I can sympathise with the poster in that I too ponder the same issues. Despite that, I just feel that this is not the place for that discussion.
I think this kind of question should be off topic for the following reasons:
It is open ended and subjective. There is no "right" answer, just a lot of speculation and opinion. Unless I am mistaken (which often happens) the whole point of the Stack Exchange network is that questions be specific and verifiably answerable.
Answering the question provides no actual learning of Japanese, nor even any indirect learning in terms of how might one pass the JLPT or earn fluency. It's simply an exploration of how people feel about the test, nothing else.
It opens the door to the even broader topic of what is fluency, which is even more open ended and opinion based and branches further away into theory and away from practicality.
I am not sure how moderation works on this site, however, if it is possible to steer this site away from forum-like open ended discussions like this question, I think that would be a good thing.