'Masculine' is believed to be a set of characteristics we associate with males. Associating actions with male, and calling them masculine is fine and perfectly reasonable. Saying action is 'male' would be wrong.
My issue is that you're arguing that women in dominant action type roles are behaving in a masculine way. I'm saying there's nothing inherently masculine about an action role, we just make that association because the overwhelming majority of lead action roles are male. It's a gender stereotype. We all know "that's just how it is". The interesting thing is why is it? And should it be?
There is a divide between the masculine and male, and feminine and female. They aren't exclusive.