"In my line of work I meet plenty of lapsed physicists. These are people with physics degrees, even physics Ph.D's, who don't do physics. Instead they're usually some sort of programmer, or occasionally some version of a quant."

I now PhDs that became High School teachers and they were some of the most gifted. I know PhDs that wait tables to make ends meet.

I think if the guy has fundamentally not understood what Peter Turchin was talking about. They are getting priced out of the housing market, won't ever be able to afford to buy a house. Even raising a family might be difficult. At the same time you pay for services for the boomers and a retirement and social security that yourself might never see.