I think the point is supposed to be that that figure can be traced to specific decisions regarding nursing homes. The supposed counter factual being that, if they had isolated sick patients from nursing homes, those deaths could have been greatly reduced.

I think it still begs the question that those patients could have been saved, but it is not trying to say that old people don't count. More, that the full lockdowns didn't really protect them, by themselves. As seen in NYC, where it is fairly heavily believed that any good the lockdown did was more than offset by sending patients back into nursing homes.