That whole paragraph was intended to be both facetious and sarcastic. Which I would think would seem obvious.
Less than 10% of the US population have been infected so far, and it’s ludicrous to think that we’ll reach 80% in two more months. Also, there’s no way that all of the additional 70% would would be asymptomatic. And the people suggesting that we’ll have a vaccine ready to go by January are the ones smoking something or drinking too much, IMO. Even if that miraculously happened and we had all the doses needed, the logistics of getting everyone in the country inoculated would take months, at least – and not everyone will even want to get the shot. But in fantasy-land, all of the above represent the best case scenario.
I was mainly responding to the curiously low percentage of people with antibodies in Denmark. I’d think it would be more like 8-10%, at least.