Wrong. Flattening the curve merely delays infections and does not prevent them.
It doesn't seem to work well either. It has been good for a 0.5 R-0 drop which points to other primary vectors instead of aerosols. Also it turns out if you need a ventilator you have a 95% death rate, so if the hospitals get overwhelmed the overall death toll won't be too different. If the death toll is anywhere near 100k total we trashed the economy over a bad flu. It would take 6+ months of isolation to beat the virus with quarantine measures, more than long enough to cause a wave of economic related deaths way higher than the virus. People have to get back to work.