Think about Free Speech. People have the right to lie to you, to say anything they want to you. A stranger can walk up to you on the street and say horrible, uncomfortable, distress-causing sequences of words and symbols to you, and theres not really much you can do to stop it. Why should a person be allowed to say to you a thing that is not true, a thing that you do not want to hear, just in the interest of his own free expression? Now just include sexuality to be included under the umbrella of free expression, blur the lines between mental and physical pain and discomfort, and there you go. And before anyone assumes that this kind of reasoning makes me at all pro-rape or sympathetic to the idea of it, please know that i personally consider Free Speech laws to actually be in their ultimate effect, regressive and detrimental to veracity within the sociopolitical spectrum. That which is true is sustained by its own evidence and merits, only insanity and falsehood needs establishment power to prop it up.
I think that making men uncomfortable would be best done by simply pointing out that in a society where non-consensual sex was no longer illegal, non-consensual male-on-male sex would also not be illegal.
And at least that would move peoples minds away from imagining a world where women are defending themselves from rapists left and right, to one where men are just as preoccupied with defending THEMSELVES from rape as they are raping others. Clearly neither of those scenarios is what is occurring in the society you have imagined, but hopefully it would move people closer to a more gender-equitable reading rather than assuming youre talking about some sort of Gorean hellhole.