Well a sport is technically a game and a viceversa. For example, a game of basketball. All sports are technically games constrained now by fixed rules, an increased sense of conmpeition and somewhat greater seriousness. So esports fufils alll of those criterias, just because it does not require one to participate in physical activity does not rightfully make it not a sport. If I had to argue, think of a sport which requires little physical activity, maybe gun shooting idk, there is minimum physical activity required, yet it’s a sport. There are entire competitions built around it. This proves that a sport is not defined by being active as we have to consider so many other factors.