1. Suits the swimmers wear are far more substantial than the beach volleyball suits.
2. I didn't think water drag was a major issue in beach volleyball.
3. From the article: "Mens beach volleyball attire also illustrates that near nudity is not required to play the sport well. The men do not play wearing tiny swimwear. They wear ample shorts along with t-shirts or tank tops."
I guess you missed the male swimmers. The male swimmers are down to small strip of cloth on the bottom.
Maybe they should wear a onsie like the woman swimmers do so their chests are covered since it doesn’t difference.