I've worked with a lot of programmers. Some of them have character flaws that make them unpleasant to work with. These character flaws do not affect their ability to "get the job done", but I'd rather not work with them and take steps to avoid doing so when possible.
From a link in the article:
Renowned conductors have asserted that female musicians have "smaller techniques," are more temperamental and are simply unsuitable for orchestras
I think that "simply unsuitable for orchestras" is vague and unquantifiable, but "smaller techniques" and "more temperamental" seem like assertions that could be challenged.
I have a general concept of what "smaller technique" means, is this something that is difficult to measure in a standard audition? Do female musicians in fact have "smaller technique" in general?
Are female musicians "more temperamental" than male musicians in general? Is there a male equivalent of a "diva", if not does that support the assertion that female musicians are more temperamental? Can you determine how temperamental someone is from a blind audition? Is temperament a valid reason to not hire someone?
To me, these senior conductors, scientists, etc. are asserting that, in general, women differ from men in certain dimensions that factor into hiring decisions but are not detectable in initial screening process.
If you really want to end sexism, I feel like these sorts of questions need to be asked and answered. My observation of the subject is that many people have an intuition, gut feeling, opinion formed from personal experience, etc. that men and women in general have innate differences that make men (or women) more suitable for certain functions.
The ONLY way that gender bias will ever end is to challenge these ideas and in fact show that these innate differences do not exist.
On the other hand, if gender differences do exist, then fighting gender bias is an eternal struggle that will never end. It is human nature to min / max and game the system.