There is a deleted article with some arguments about suitability for inclusion on the Talk page. The fallacy is described as "judging groups primarily by the success or failure at those at the top rungs." Now that I read it, that doesn't seem like nonsense.

You should further investigate the source material. The quote in question is from a piece written by Alison Beard of the Harvard Business review (even though there are two citations, the other just points to the original), where she is describing how a person from the MRA group described the "apex fallacy" to her. It's a circular way to try to legitimize that which isn't legitimate.

It is true that women have done remarkably well in progressing toward parity in mid-level management positions in recent years. So there's a legit and interesting question about why they don't have many positions of real power. I'm sure there are a variety of factors that contribute, but bias is definitely one of them.

Using rhetorical obfuscations to inhibit what should be a very important debate about why corporate America and government are structured the way they are does us all a giant disservice. It's very difficult to fix problems we don't understand.