I think it's important to separate different types of harassment. Yes, Feynman was probably sexist and viewed women in terms of stereotypical gender roles, but so did probably 70% plus of people in the 60s.

I specifically contrast that with the many recent reports of deliberate abuses of power or outright assault. There was still a knowledge, even back in the not too distant past, that those things were wrong, as evidenced by the fact that so many men tried to keep their behavior hidden.