Um, mass quarantines of healthy people is not unprecedented. It was, in fact quite common through history when outbreaks seemed to be getting out of control. First they'd quarantine families. Then neighborhoods. Then entire cities. In fact, during the pre-industrial times, entire cities would be quarantined and sometimes, if anyone tried to escape, they would be executed. While a reasonable arguments can be made about whether the various flavors of Covid quarantines were necessary or effective, to say they are unprecedented is simply wrong.