Girls and women can have all those virtues. Are they masculine?
And men and boys who have different virtues aren't masculine? I think that this is the problem in all this argument. People want to fit all men and women in little boxes, not allowing them to develop full potentian.
There are plenty of ways to live fulfilling lives. Conservatives want us to all live one way, making people who doesn't fit their ideas miserable.
Maybe people should strive to be all those things not to be "masculine", but just because those are good things to be. And won't be let's good if it is a woman who have them.
PD: an excess of stoicism might be bad, people need to be able to ask for help when needed. It saves lives.