As a diesel mechanic in the midwest, I can say the decline in men that have work could be a couple of factors. First, we decided 30 years ago everyone had to go to college, and in doing so found most degrees hardly worth the paper they were printed on while landed gentry reaped the windfall of college loan income. conversely tradecraft like welding, carpentry, HVAC, engine repair, and plumbing fell by the wayside with many of these crafts given a scarlet letter and left to beg and plead for any help whatsoever. there is still plenty of work, its just been made obscure and wicked by a hand that cant reap any lending profit from it.
second, militant drug testing and background checks have created an artificial scarcity. Do i need a sober person to run a drill press? certainly, but if that person spent a little time in jail for cannabis possession i dont care. Viewing potential employees as potential liabilities has in turn created a culture of calvinist jackboots that only hire the most visibly noble --if not technically bereft-- to fill their ranks.