Definitely there seemed to be a "right way" implication in her post; I believe someone else pointed out that she went to a lot of trouble to define terms but left "responsible" out there as a very, um, nebulous "write your own definition here" kind of term, and, indeed, that word "responsible" was one of the red flags for me. The other thing that rankled was, as you say, that only people who have some personal knowledge of a subject are somehow qualified to write about it. That might be true for designing rocket engines, but somehow I don't think it's exactly true for writing fanfic. Or, um, even professional fiction. *g*