I notice some of the riders and officials in the Tour de France are still wearing masks at the beginning and end of each stage. It seems all a bit pointless now, particularly as all the riders are sans masks passing through the huge crowds of spectators en route.
I think that was maybe a reaction to the number of riders in the Giro who had abandoned because of COVID, including Evenepoel who was leading the GC at the time.
Although the Tour organisers did say that a positive COVID test would not automatically mean having to abandon the Tour.