It has nothing to do with supremacy... that seems to be the rhetoric from a certain 3rd wave extremist faction who believe tearing down men is the only way to elevate women. There are plenty of strong women out there who respect the other sex.  

The fact is that there are a lot of dangerous jobs out there that men take on in overwhelming majority... but its only the cushy, desirable jobs that I hear anyone complaining about there not being equity in employment.