As a follow-up to the last post, consider other activities that girls are engaging in in their tween and teen years. Often it is about one (or both) of two things, social/boys/beauty/pecking order/hypergamy and/or getting good grades plus the right charity/club associations to get into University. It apparently starts very young these days, and it does not let up. Being totally surrounded by it, girls have little conception of how anything could be different. And they end up all in.
And what does their development during these key years look like? From one perspective, they learn to hone their skills at hypergamic combat. This includes such skills as back stabbing, identifying competition, finding gullible students to do your dirty work, spread rumors, act sweet, innocent and pure, finding yourself sexually, etc. And there is always the pressure to slut it up. This situation is just plain bad for everybody and bad for society.
What did girls concentrate on in times past? For one thing they were developing intellectually and character-wise during those years. They were developing useful skills. They were trying to make themselves attractive marriage material.
Of course, the two time periods were not as black and white as described. But there is much truth to these descriptions. Deep down people realize this, but delude themselves that there is not a real problem.