No, we don't. Some people just don't define masculinity the way you do. For example, they don't consider all men inherently aggresive. So when we critizy aggresion, we aren't critizing men, only aggresive people.

In the same way, if a men is not strong, it is OK. He can be masculine and have plenty of other virtues. The difference is that we don't consider certain traits masculine or femenine because we have seen people or both genders have them.

We do celebrate good men, just not the way you would like it. And not out of fear that of we don't, they'll become aggresive so we need to appease them and give them a purpose as if they weren't people able to choose their own way and purpose on their own.

This idea that masculine men can be nurses or teachers or even SAHD is absurd. Men don't need to be plumbers or take on any kind of role to be a men, they just are. It is the expectations of people like you the ones that make them feel inadeacuate. Even the classification Alpha and Gamma is loaded. Or have you ever meet a men that happily says that he is a gamma. No, all want to be "alpha" even when they aren't. And that leads to frustration and depression. Can't you see how your system hurts them?