The article makes it sound like Lee Kindell is replacing himself, not employees: he "once made all his dough by hand – until an elbow tendon injury forced him to investigate using machines instead". Then he got two robots. But you might question why they had to be robots, that part is unexplained. Later on he suggests he can employ people serving the pizza instead and in this way get a higher pizza throughput. Though in fact his robots are broken due support vanishing vaporously so presumably at present he either does indeed employ some humans, or produces no pizza except imaginary future autonomous pizza, which is coming soon, just a matter of time.