This would only make sense if there was any evidence that lockdowns - general quarantine orders, really - work in preventing the spread of disease. The only way they could conceivably work is if everyone is locked in their homes - no exceptions. That means no food deliveries, no exempted "key workers", no special circumstances, no police or ambulances. Everyone. Think about the logistics of enforcing a total ban on being outside when the means of enforcing it also falls under the ban. The moment you make an exception for the police, or whatever special organisation you're using to enforce the lockdown, you have a vector to spread the disease. Lockdown fails.