I vaguely remember something about when the contracts were up to be renewed, JJ and Prentiss were being cut because "they couldn't afford it", while the men of the show were being offered raises. That's sort of a first sign.
So, now they're completely removed JJ, they haven't been shy about pushing Prentiss out, and my understanding is Garcia is now on the spin-off, which at least looks like they're trying to push her to exist in that realm, and not the prime. The only female then is Seaver, a character who's still in school.
So...man-heavy Boys' Club just kicked out all the girls.