Culture and society don’t promote male beauty, so men with long hair probably wouldn’t feel the need to care about half the styling cares had by our society’s women.
Also is the three year a staple of being Jewish? because I don’t find it very practical (and two year old me doesn’t look good in a ponytail). It can be cute on little kids but I think the more hair a kid has flying around, the more prone he is to related accidents.