ONLY herd immunity has ever ended any entrenched epidemic.
Lock downs can not, have not, and ever will end any epidemic.
By stretching the time of any epidemic, locks downs always result in larger numbers of deaths.
Here are the experts.
Listen to them.
Lockdowns can work, however they only have a real chance if the disease is so virulent that there are minimal asymptomatic or mild symptom cases.
You would have to add in a real serious mortality rate, i.e. 5%-10% to really force people to isolate, and the disease needs to be only contagious when a person is truly symptomatic.
In that scenario a lockdown and isolation of anyone in contact with known cases is the only way to stop a true decimation of the population.
What you say is true about any disease that has a really high mortality rate, like Ebola, but what you are describing is full quarantine, not lock down.
Full quarantine works as fast as possible, with total end of movement, contact tracing, and total isolation of the infected.
The problem with covid-19 is that we were not testing everyone, so missed that 90% of those infected were asymptomatic.
And that make Fauci think it was 10 times more lethal than it really was.
Lock downs are not like full quarantine because lock downs just try to flatten the curve a little, and that makes the epidemic last longer instead of ending it more quickly.
With epidemics, time is of the essence.