That is absolutely untrue - a large part of the jobs were either outsourced and/or automated to be trivial, but a large part is essentially barely made easier by technology - food service, all the jobs necessary for running and building infrastructure, homes etc. is only changing very slowly due to technology - this is due to the nature of the fields, even if there were rapid advancement in plumbing (there weren't) in the past few decades, most of the buildings are standing and rebuilding them makes little sense - same with water treatment facilities, power plants etc.

In fact I would argue in some ways society is even less capable today - the percentage of people skilled in the trades is much lower, so it would be much harder to rebuild from scratch.