a) it's not entirely whether vaccinated people can still be carriers. I think it's now /mostly/ clear that they don't.
b) people are fscking awful. If you let vaccinated people not wear masks, you're going to have a bunch of philosophical zombies lying about their vaccination status to avoid wearing masks in public spaces. So, everybody wears masks until this thing is over and then some.
a) it's not entirely whether vaccinated people can still be carriers. I think it's now /mostly/ clear that they don't.
b) people are fscking awful. If you let vaccinated people not wear masks, you're going to have a bunch of philosophical zombies lying about their vaccination status to avoid wearing masks in public spaces. So, everybody wears masks until this thing is over and then some.