We do close all the pools and lakes to children who can't swim, or who swim unsupervised. We literally do not let children swim freely in random bodies of water

We do close all the pools and lakes to children who can't swim, or who swim unsupervised. We literally do not let children swim freely in random bodies of water. It's a huge deal; we hire lifeguards, teach them methods of operating safely in bodies of water, there's all kinds of equipment a child can wear while in the water to prevent drowning... This isn't a great analogy for you, because it pretty thoroughly proves my point that masking is a very reasonable thing to do, compared to the litany of structure we put around children swimming in pools. I was a lifeguard at a summer camp for christsake, what a terrible analogy. I literally worked to implement the many systems we use to keep kids safe in bodies of water.