In your opinion what is it exactly that makes her unqualified for the post?
The question should be more for you to explain how she was the MOST-QUALIFIED of those considered for the post, I think.
The point is that if a white, heterosexual male was promoted to the post, it would not appear here in this forum. We only trumpet the "PC" aspect of the promotion today, not the accomplishment of the rest of the members of society who quietly go about the traditional merit climb without fanfare.
Usually, those who are offended by pointing out the special treatment in the headlines whenever one of the "identified classes" gains prominence it is due to a mindset of "so there, now we showed 'em they can't treat us differently anymore", i.e., a persecution complex that PC-dom has addressed and rectified somehow.
That's the same PC-mentality that would get the Hildabeast elected to the White House with the votes of those who vote for her because she is a (purported) female, alone.