Likely an unpopular view, by why is this a problem? There are unequal gender splits in many fields, but I don't hear a big outcry that men are underrepresented

Likely an unpopular view, by why is this a problem? There are unequal gender splits in many fields, but I don't hear a big outcry that men are underrepresented in Nursing as an example, or that there aren't enough women lumberjacks. Not everything needs to be in a 50/50 balance.