You know this really does seem to be a continued grip amongst us old buggers.
But my experience does not match this at all.
I don't know what counts as young but my kids and their friends work crazy hours. Maybe they don't count as kids but through high school uni and then working up to their present mid late 30s they really did work. I would not like to compete with them.
For example daughter starts at 8 am and works through to 6:30 7 pm most nights and regularly half a day on weekends. Sons are the same with the younger son still pulling all nighters when projects demand. His job involves teams all around the world and if necessary he is up through the night to talk to India or Europe or the US. Jobs are engineer , lawyer and infrastructure private equity.
Their friends are similar , working interesting and demanding jobs all around the world. Archaeology, aerospace, genetics, pilots, military aircrew, accountants, lawyers, farming, construction , pharmacy etc etc. The common factor seems to be a competitive spirit. Wanting to do interesting stuff.
If you don't know young people like these then your hanging out in the wrong crowd. Believe you me. These kids kick butt.
I will admit to being a bit worried however. They work too hard and families and homelife suffers. Many / most do not have children. My youngest is taking the active decision to step back to have a family.