What's disappointing is that even if (sticking with your example) "high school boy" isn't a distinct gender in the way you mean, there is still potential for an

What's disappointing is that even if (sticking with your example) "high school boy" isn't a distinct gender in the way you mean, there is still potential for anthropological investigation into the phenomenon of a person's different roles as they age and change, as with these other "roles" more broadly-speaking. But instead of just having that discussion it is first warped to fit into a very narrow framework of American gender discourse.