The actual funny thing is, you're conflating two entirely different things here. Women relaying basic fundamentals of good mental health, pro-social behavior as identified by experts, and speaking up about things they've personally experienced that were unacceptable is not remotely like mansplaining - which is telling a woman that you know more than she does about her own areas of expertise, how her body works, or what she thinks about something.
We live in a violent domination oriented society because those are fundamental elements of mainstream masculinity as it is currently socialized in our culture. Pointing that out is basic sociology - not at all like mansplaining.