That is just power fantasy. Do you have any evidence that shooting people for breaking quarantine has effect? I think it just causes people to avoid doctors if they experience symptoms. People do not want to "disappear" into quarantine. I lived under authoritative government and know how it works.

Initial situation was made much worse because China policed their doctors.

Also I do not think that China actually shoots people. It shutdown transport and pumps money into economy. Other states could do that as well.