I have heard shadows of this theory a bit from Jon Stewart over the years.

https://youtu.be/tU3rGFyN5uQ?si=0387L1blOdW2Ttpe

He says it himself! His role its to induce "healthy" unemployment.

As opposed to unhealthy unemployment which means the system collapses. Zero unemployment is not going to happen in any normally functioning society, though in the former USSR it existed. That included a lot of busywork (changing traffic lights, for instance, and requiring three cashiers to buy a bread).

But that's not a conspiracy, that's built into the system. 2% unemployment is a number I remember from high school economics.