However, their (men’s) lack of tzniyus does not have a deleterious effect on others. That’s not sexist, it’s just nature.
I would respectfully disagree that the lack of tzinius by men if they act inappropriately or if their l’vush draws attention to themselves, DOES have a deleterious effect on others, aside from the obvious inyan of kavod for a talmid chacham etc. I suspect your view of “nature” in one-directional