What form of entertainment or sport can you not reduce like this? You could say something in the same vein about jogging, watching TV, cycling, organized sports, etc.
I'm American and going swimming basically means to go nowhere for as long as the exercise lasts. The entire concept of it is laughably unproductive, resulting in at most sunburns, sports injuries, and further pollution from chemicals used to clean the pools. It's preposterous hedonism.