You should further investigate the source material.

The background is interesting, but to me it is irrelevant to answering the question "Is the Apex Fallacy a meaningful concept that could be useful in some cases?" I think it is a fair answer to someone who says "Men are doing great, because men hold most positions of power." I don't see how it says anything about men compared to women.

If you learned that the article was in error, and the concept was actually introduced by some respectable source, would that change your opinion of it?

I do believe that we can make some heuristic judgments about how worthwhile it will probably be to look into what appears to be a crackpot theory by seeing where it came from and who is interested in propagating it. We just have to be careful, because heuristic judgements can be unreliable.

It is an interesting subject. Why do we have women's sports? Why is there a Women's World Chess Championship? Wouldn't it be strange to have race-segregated sports, on the basis of cultural bias and discrimination preventing different races from competing on equal footing?