>meet several friends and infect them. None of them are inclined to quarantine

I don't know if it would be helpful or not, but this argument is a little questionable. You have seen several friends rather than a second gathering, reducing the number of people you infect. Plus you implied that someone cannot opt to see nobody in a social manner for the two days.

Who knows, it could be a waste of time still, but I would give it a little more credit.