> I think these people will find life tremendously boring post work.
Why? Some people have hobbies and friends. And if they don't have to spend most of the daylight time at work, they have more time for doing what they enjoy most and spending their time with people whose company they enjoy most.
> If your work is drudgery... But if you enjoy it...
What if it's something in between? My job is nice in many ways. But give me enough money that I can spend the rest of my life doing my hobbies instead, and I will quit without thinking twice. It's not that the work sucks; I just enjoy my hobbies much more.
> ...to live a life of poverty?
Poverty is relative. I don't desire a new expensive car, exotic vacations, and other stuff some people spend a lot of money for. All I need is a roof above my head, food, computer, and internet connection. Plus some extra money for random unplanned situations. Then I can read books, watch videos, play computer games, write a blog, develop my own software, and take a walk in nature with my friends afterwards. That seems like quite happy life.
Everyone has their own preferences. To me, the idea that someone needs a job to bring meaning to their life, sounds utterly horrifying. Maybe I am just misunderstanding something, but do such people have no friends? No things they want to learn? No non-profit causes they want to help? Spending most of your days doing one thing over and over again, means neglecting the rest of your life... or of what your life could have been otherwise.