Tbf the working conditions and life conditions have improved enormously since the tge early 1900s. Just remember that the early 1900s was still a Victorian era hellscape in regards to working conditions, with child labor, no rights whatsoever, no protections, 18 hours work days until you dropped dead at 40 if you were lucky.

That being said, the issue is that in many cases production has gone up by 300% since the 90s, with no meaningful change in working conditions, just a reduction in personnel. A change is needed and this 4 day work week movement is a good thing.