Cycling is a great activity to perform solo during the pandemic, but riding right behind one or several riders is foolish right now, IMHO. I would put it on the same level as hanging out in a packed gym for an hour. I know many Americans think the disease is a hoax, not a big deal, or over but that just isn’t the case.
I miss going to the gym. I'm missing out on an important part of fitness. Also you'd see the same people over and over again, eventually become friends with some of them. But indoors with people breathing hard for an hour, and everybody touching the same weights ... no thanks.