Have you tried thinking about that question? Lots of interesting aspects would come to light.
Maybe there was a time when food just grew into people's mouth. But eventually there were too many people, so they had to resort to actively hunting and gathering stuff to feed everybody (a ka work). So I guess you should blame people having babies for having to work.
Also, a lot of the work with growing food could easily be scaled back and done by people with plenty of time to spare for their own lives, or even partially automated. We're already quite a lot more efficient than before. There's no reason we have to have people suffer shit jobs just to live.
As for the "Bullshit Jobs" theory, yes a couple of farmers can produce a lot of food. People don't only need food, though.
What are you going on about, you seem to be implying there should be a basic income? Or what is the alternative to working you envision? That has not been proven to be workable yet. And somebody will still have to do the work.
What I see is excessive bureaucracy generating pointless jobs that drain a lot of resources, and a lot of work being done with lower waged illegal laborers, or in non regulated sectors. I don't know how long it will continue.