Most of what you've said is nonsense that capitalists feed the middle and lower classes to keep them fighting eachother. The "low skill" jobs are generally the ones you can't phone it in as much, because there's actual work to be done at all times. I say that having worked in many different environments, from gas stations to a large cap tech company. The cashiers at the gas station were at least as busy and hardworking as any devs I ever worked with, and both are much, much harder working than basically anybody with an MBA, who are generally the people most likely to talk about how they are "self-made."
I agree and would add that in my esperience people in richer countries work less than those in poorer. In the Netherlands people work less than in Italy, in Italy people work less than in Morocco. This happens because in richer countries they are relatively more efficient.