You probably can't do every job at 20% speed and expect to keep it. If you're a middle manager at a giant corporation, for example, there is no 1-day-per-week option. It's all or nothing. But that's not all jobs. Any freelance work, obviously, fits the bill. As does restaurant work. (In fact, I know a fair number of people who are (at varying levels of awareness) actively enacting this work-less-and-live-on-less strategy, by hopping along a never-ending string of part-time bartending and server positions.)
The great thing about trying to live like it's 1917 in 2022 is that you still have access to all this 2022 technology to make it happen. A software engineer could pretty clearly choose to do the equivalent of 1-day-per-week's worth of work throughout the year by taking on freelance/consulting projects. Most software engineers don't do this for the simple fact that they'd rather work more and make more.
The great thing about trying to live like it's 1917 in 2022 is that you still have access to all this 2022 technology to make it happen. A software engineer could pretty clearly choose to do the equivalent of 1-day-per-week's worth of work throughout the year by taking on freelance/consulting projects. Most software engineers don't do this for the simple fact that they'd rather work more and make more.