I hope that as time goes on we are increasingly able to see ourselves as all in this together, rather than in a zero-sum game between genders.
While I share your aspiration, let me make an inflammatory question for the purpose of prompting thought. (I would hope readers take this as a neutral statement; since obviously the women entering the workforce see it as a net positive, but it may be a line of questioning to attempt to explain why it's so easy to see it as a gender battle) What if it is zero sum, or at least, approaching that? There are two phenomena…
The reduction of inequalities tends to have this sort of effect on those who benefitted from inequality, more or less by definition. I will go along with your stated intention of wanting to provoke thought by saying that I think it is a bogus argument against equality, that ignores the unjustifiable harm done by discrimination. Furthermore, by itself, it does not establish the 'zero sum' part of 'zero sum game'.
BTW, grammatically speaking, the 'it' in the question you pose appears to refer to the 'sexual harassment' of the title, but your comment seems to be about something else altogether.