Men have worked as essentially shop keepers and store clerks for a lot longer than they have worked on assembly lines. There have been waiters forever. Lawyers are the world's second oldest profession. Teaching was a male-only profession for centuries. The idea that men are and ought to be unreflective, grunting, two-fisted louts is a class thing, not a gender thing, and it is imposed upon working class men by a system that needs them to be beasts of burden.