if we all behaved as responsible people, in my opinion, it would not be a wrong thing to go to the stadium.
the problem is seeing some who don't follow the rules and endanger everyone!
It is not clear to me how schools can be opened and many factories, where many people are in one place indoors. Imagine children in school and kindergartens (you think they know how to behave properly), then people must be let into the stadium with great discipline nothing would happen, of course a limited number, masks required.