I’m all sorts of eye rolling at “showcase how independent they can be” when I suspect a significant number of Gen Xers reading that article (can it even be called that it’s so lacking in detail?) would recognise that parenting style as “when I was young we went out to play for hours and my parents would have little clue as to where we were or what we were doing.”
re sea swimming surely it’s entirely dependent on a number of factors (child’s swimming ability, sea conditions, knowledge of area etc).