male breasts ≠ female breasts
and therefore should be treated differently from each other. Don’t know how else to say it.
But why?
You’re asking me why we treat things that are different from each other differently?
Yes. Just because they’re different doesn’t mean they have to be treated differently. How and why they are different is what matters. I’d argue that there’s nothing inherently different about female breasts beyond the fact that they have more fat and are used to nurse infants, and as such shouldn’t be treated any differently than male breasts. Women should be as freely able to walk around topless as men.