Its a cycle. As the feminist movement started to gain strength, more beta males were moulded by the society which in turn keeps giving all these bullshit feminism extremists even more influence in the society.
Secondly, his second point is far more powerful than it seems. The ultimate BP idea is that women are asexual fairytale princesses who love kind men and kindness and that's what gets them going. This is why there's those "Nice Guys™" there trying to win the women with their nice gestures and kindness, while the love of their life is getting pounded by a top 20% man.
Just thought this'd be a nice idea that new RPers should ponder on, because its so simple and points out the obvious without you having to read too much into it.