"Women's initial reaction to stress is seen as a weakness/illness, mens reaction to stress is seen as men just been men. This is gender bias."

I think your analysis has shortcomings. Men make up a hugely disproportionate number (85%) of those admitted into Canada's correctional system. That's not a sign that society condones "men just being men" when they resort to violent behavior and drug use.

Women tend to respond to stress with higher levels of anxiety and neurosis, because their socio-biological role in human society predisposes them to that response. Men tend to respond to stress with a greater degree of anger and violent behavior. That too is a response to the male's socio-biological role. Both responses are a natural outcome of our respective genders' joint evolution.

I'm pointing out the obvious here, but the human species is a very successful one.  The roles and responses that the genders have assumed, to this point in history at least, have contributed to that success.