I was talking mostly about Americans I met. What might be true though is that probably I met the well off ones and between 30 and 40, which might like the idea of "we are great because we made it". But they all seemed (to me) that they were extremely focused on work (like: no particular hobbies, no knowledge of fields outside their work).

Some of my impression seems to be confirmed by data, for example (did not check in detail but I have seen similar ideas): "Even so, the average 40-hour-per-week employee in the U.S. is working 400 more hours annually — the equivalent of 10 more weeks — than employees in Germany." https://money.com/americans-work-hours-vs-europe-china/