I think Dr. Blythe Adamson on the last Variety Stagecraft podcast makes a strong point about changing precautions.
She supervises the COVID safety measures for Pass Over. She points out that precautions will change as the numbers change, as rates of infection change.
People seem to understand that viruses mutate, but are in shock that precautions change in response. If you want an unchanging precaution, then lockdown would be the way to go. But if we want to let people go out into the world, there will have to be changes over time as the circumstances change.