IMO, it just comes back to how women are raised to treat each other in a competition. They make things personal, they make things vicious and there is no real respect for each other as an individual. when they are on the court, in the job, whatever it is, and they are going against another woman its not enough to beat her at that activity, they have to include personal attacks and beat her on an individual level. and again IMO, its not just talking, it really is personal for them they want to tear the other woman down outside of that activity too. at least while in that competition, things may change outside of that years down the road, but I just think they make it personal. losing to that woman means she is the better woman, not player.
so when one gets press, they are hearing that woman is a better woman than me. not that she is a better player. they do this outside of press, but just like you can't compliment a woman around your woman, doesn't matter how non-sexual it is, what your relationship is, a compliment to someone else is an insult against her, because she isn't included.
sure they band together when its women vs the world, or women vs men; but they will spend far more energy tearing themselves apart when its woman vs woman.
not sure if its literally how their brains work or if they are just raised that way, I am sure men are at fault somehow, but its a different attitude.