We've always had respiratory diseases but we never mandated stay at home lockdown orders or face masks. That's because there was never any evidence for either. There still isn't. Epidemiological modelling of respiratory disease transmission is not science: it is science fiction.
Difference between science & science fiction? Evidence based studies showing no correlation between lockdowns & Covid19 mortality & showing masks don't significantly alter transmission are science, epidemiological models saying the opposite without evidence are science fiction.
Difference between science & science fiction? A doctor diagnosing a patient's symptoms & testing them after confirming symptoms is science, testing asymptonatics & saying all positives are "Covid Cases" without a doctor's diagnosis of symptoms is science fiction.