@jaelisp a pound of butter in early 1900 was 70 cents. Your typical blue collar (factory) worker at that time made 25c an hour. So would take about 3 hours of work to afford a pound of butter.
(source: https://www.thepeoplehistory.com/20sfood.html)
Compare that with today where the average cost of butter is 4.6$. The average factory workers pay is 16$ an hour.
So today working for only 20 minutes will buy you the same food that 100+ years ago would require 3 hours to earn.
Looks to me like modern technology **did** make it so you can work fewer hours compared to a hundred years ago. Its just that no one wants to live like they did 100 years ago. They would rather live a **better** life and work the same number of hours. Go figure.