It's very easy to very quickly get into trouble unexpectedly. It's a natural environment with many variables that even experienced swimmers and surfers can 'come a cropper' in. Not to mention that these are kids and kids make mistakes.
Let's hope you never get in to trouble in the sea and they've decided to wind up the coastguard because they shouldn't be taking the time and trouble to help 'idiots' as how can they tell who they are? That's like A&E closing because they get swamped with drunks. I'm sure most people who end up needing emergency assistance in the sea don't intend to need it whereas idiot drunks who drink to excess could easily prevent that happening. I know what I'd rather fund.