It’s meant to be something you drink before an intensive activity. having some sugar in it is a good addition, not a bad one. 110 calories per can is nothing, you can burn them by walking a few km.
But there’s always some derivative that comes with 0 calories.
That’s 100% their shitty decision. But even if you don’t buy a red bull for exercise, it’s still only 110 calories. The can says 53% sugar, which is about the same as the amount of carbs in bread. You can easily eat more calories with bread.