If instead we had let it spike in March, then herd immunity would have ended the epidemic in March, saving 260,000 lives.
to get to herd immunity, more than 200,000,000 have to have antibodies. so you must be saying we should’ve been ACCELERATING the number of infection. and forget about swamping our hospitals, they can manage just fine, no matter how many people need to get in. And never mind that reducing the number of infections reduces the chance of the virus mutating into a strain that is more deadly or that the vaccine won’t prevent.
in the early days there hadn’t been much research on how to treat COVID. A lot has been learned since then And the morbidity rate is declining - for now.
We SHOULD have been accelerating the infection rate. Since the young and healthy are essentially at no risk, we should have been deliberately infecting young volunteers. They could have been compensated for the tiny risk.
But no, your numbers and conclusions are totally wrong.
First of all, when you need 70% of the population to be immune in order to achieve herd immunity, that has NOTHING at all to do with antibodies.
Since over half the population is and always has been inherently immune to every epidemic there has ever been, the estimates should have been that only 10 to 20% more would have had to gain immunity.
Remember that children as almost all inherently immune right off the bat.
By insolating only the vulnerable and quarantining the infected, we could have used variolation, (deliberate infection), or only the young and healthy, so had almost no hospitalization at all.
And NO, there would be NO variants or new strains because variolation would have achieve herd immunity in less than a month. That would prevent any new strains. New strains are a product of time, not spread. And if we had achieve herd immunity in March, we would have had neither less spread, not more. As it is, by "flattening the curve", we forced the epidemic to last over a year, which produced the most deaths and new strains possible.
And antibodies have nothing to do with it. Whether inherent immunity or acquired immunity, that only means your immune system has the ability to produce the correct antibodies in response. It does not mean you have to actually have them. And they only last a month or less anyway, so antibodies are not relevant.