I'd note that the article doesn't address the issue of ER capacity at all. Most wealthy countries' citizens expect to be able to get treatment if they catch COV

I'd note that the article doesn't address the issue of ER capacity at all. Most wealthy countries' citizens expect to be able to get treatment if they catch COVID, but if the US didn't implement lockdowns, that wouldn't be tenable. The author's thesis may still hold that this would still be a small proportion of deaths, but it would be a less popular decision than lockdowns.