Not really. Euro takes place a bit before the games, and it’s happening in Europe, not Japan. Everything I’ve seen from the IOC, Tokyo2020, and the Japanese government suggests they plan to go ahead with the games. People canceling/postponing events that are more than two months away are overreacting. If we get to May, and the virus isn’t stopping, then it will be time for the cancellation/postponement of the games.
On the bright side, Sanya is officially Covid-19 free, and will probably remain so. So the 2020 Asian Beach Games should be good to go for November