Well, yes
Datun, I agree with you that the issue of male-on-male violence is not ours to solve. We do have a role to play - research shows after all that violence, whether male-on-male or male-on-female is less prevalent today than in the past. And one of the main causes for this is thought to be that female people have more rights and input into modern society, and as a sex class we prefer other solutions to violent ones. And we have a role to play as mothers, especially those of us raising boys, to teach them how not to continue the cycle of violence.
Of course, what we are focusing on here as women's rights proponents are the practical and not theoretical issues arising for female people from male-on-female violence. Like you, I don't believe it's our job to also focus on practical solutions to male-on-male violence to keep male people safe.
But I didn't share that view when I first took an interest in this debate. I felt that it was women's responsibility to find a solution to keep those males safe who couldn't be in our spaces because they were the opposite sex but wouldn't be safe in the spaces of their own sex.
And I didn't travel from there to here in a straight line either. I learned about male and female socialisation. About boundaries (mine and those of other women). About having the confidence to say no, and the self-worth to expect to be heard.
So when I read those but what about genuinely ambiguous people? comments, I don't think derail, I think let's look at the question, and what's behind it. More often than not, there's a lack of knowledge not wilful ignorance. A lack of understanding not indifference. (I've had that experience with professional feminists, who are paid to know this stuff, so I'm no longer surprised if ordinary women think this is an insurmountable problem.)