Problem is, the vaccine seems to stop people dying from Covid (which is good!) but there’s still a chance of catching it. In normal life That means you might have to work from home or not work at all while you isolate depending on your job, but for a tour if it’s one of the musicians then all bets are off, as has happened here.
What this means for the future of touring I’m not sure. Best case scenario you have to cancel 10 days of gigs? How many tours can afford that if the cost is in excess of 100k a day? Insurance is presumably impossible to get.