But that is the way in which I mean it--the broadest and most personal sense--which is why it is bad to box the whole thing by saying "Man Box".

"I didn't mean that!' you might protest. "I only boxed the bad patriarchal norms!" Well, you wrote enough so the bounds of the box were fairly clear in your original article. But you can't credibly deny that words have implications, and when you write less and other people read "Man Box" it doesn't have the connotations you're talking about here with incredible diversity, because you implicitly put all of "Man" in the "Box". It suggests exactly the opposite thing from what you're going for, as far as I can tell: it suggests that the only way to get out of the box is to not be a man. It takes quite a bit more reading to discover that the intended meaning is that what's in the box is a very small fraction of what being a man could mean (and has meant, in many cultures).

And, yes, I think some of the uses of "white" are similarly unfortunate. For instance, the term "white fragility" is very high on antagonism and very low on informative content.

Likewise with things like "black culture" to mean "inner city street gang culture", "blonde moment" to mean an episode of particular cluelessness, and so on.

Language that suggests (or literally is) stereotyping is usually best avoided, especially if the point is to encourage the target to change.