Outside of extreme cases like this, where someone’s leisure time is presumably wholly directed towards one pursuit, do you typically question the quantity of time spent on entertainment? How about the millions of hours of cable TV every month? Doing sudoku? Playing pool? All unproductive things according to your mindset.
On some deep level I do feel all of these things are a waste of time, so I end up scrolling Reddit and HN instead. Is there a firmware patch for this? ;)
There aren't any societies like that thankfully. Yet. There's some subcultures, like on HN where at least some years ago there seemed to be a subculture that if you didn't spend your spare time on your side gig or startup, you weren't a real hacker.
That said, the reality for a lot of people living in the US at the moment (and for a while now) is that they have to work multiple jobs and / or gigs like uber to make ends meet.