Thanks for posting the link, (I'm a member of the NSWSKC, but that was long before my time). I do see your point Whitsunday. Why are inexperienced people out paddling well off shore ? There is potential for serious outcomes. People die regularly in this type of scenario, particularly in colder climates.
But lets keep it in perspective.
No one was killed. No one was hurt.
The boat was lost under tow by the yacht, as the group had already decided that the conditions were beyond their abilities and hitched a lift. That shows good judgement although not necessarily good knot tying despite the group being predominantly scouts.

Does it actually qualify as a kayaking accident ?
While the language and writing style may leave the impression that the author is proud of the outcome, reading between the lines, it doesn't read to me like a brag sheet. It reads to me like a young person who made some poor judgement calls, had a bit of an adventure but is smart/humble enough to post the trip report for others to learn from. They could have gone home with their tails between their legs and kept their mouths shut, so I'm prepared to allow a bit of leeway in the writing style, especially as it was in line with reports written by other more experienced paddlers at the time and nobody got hurt. You've got to expect a bit of ego preserving rhetoric when someone is " 'fessing up" to an embarassing experience in a public forum.
Secondly there isn't a great deal of detail about the individuals and their actual experience. While there may well have been limited experience on the sea, it's likely (being mainly Scouts) that there could have been some white water background and that the participants could roll and brace well to start off with.
Was it an ideal situation? No. No argument there from me. Could the situation have been managed better with some additional planning and experience ? Yes, for sure. The important thing is to be thinking about safety and trying to learn from the experience of others, which is exactly what you're doing and good on you.
So here's an exercise, "What would you have done differently ?"