It’s definitely more surface area per volume, but a 200 vs 202 lid and a smaller hermetic seal cancels some of those losses. Sidewall is cheap aluminum wise, but you’re likely right in that it’s a little more aluminum. Definitely costs more to make since they do fill a little slower.
Also fuck coke, what a bunch of assholes
They do, but overall the can end (lid) is a LOT more aluminum than you expect and the whole rest of it isn’t as much as you expect.
So a little less lid is worth a fair bit more sidewall in terms of weight of aluminum