As a simple way of thinking about manhood, this graph is helpful. Though as I note in the comments, I think adolescence is not necessarily the right term, all people go through adolescence, it’s not a negative thing. It’s a stage that includes puberty but isn’t limited to it, and it’s a stage that seems unique to humans; no animal does it in such a significant way. Extending it to avoid responsibility is wrong, but adolescence in itself isn’t. Maybe the phrase “the teenage man” would fit the bottom left quadrant better.