Perhaps a better question is not who knows *about* these things or is supposedly doing these things or things like these-but rather who is displaying real skills wrought from them or things like them? Judging ....
It was not an invitation to indulge in judgments. It is a request to share respective experiences. One should no more judge from a poor articulation of a topic one's competence in its performance, than one should assume that more involved articulation of it is evidence of incompetence. Both positions are the result of a naked prejudice, and result in an invalid judgment.
Actual experience is useful to exchange, and everyone has something to profit from it.