Another thing I should point out is that the whole stigma against pursuing younger partners is INHERENTLY sexist against men.

Think about it. The social convention is for men to pursue women and women rarely pursue men. So if an older man wants to date younger women, he has to approach them and show interest, otherwise nothing will happen. But when a woman dates a younger man, it is almost always because the young man did the pursuing. Who do you think is judged more harshly, the woman who gets asked out by a younger man and says yes, or the man who actively pursues younger women?

Add onto this the fact that feminist society is conditioning women to be see older men who pursue them as creepy weirdos, whereas men are being conditioned to see older women who pursue them as sexy cougars.