Our club's junior-program chase boats have prop guards, and when I was tasked with buying anew outboard for the camp I worked at ( in 1984 ! ) I bought one with a water Jet-drive so as to NOT have a propeller. Yeah, THAT one was a lot of fun - learning that "Neutral" wasn't really...
Very sad - but to be accurate, this was a powerboat accident, NOT a sailing accident. Not that it matters to the family - my deepest condolences to the young sailors loved ones.
He might have only sheeted in the main once, but he was one of us.