I think it is in response to " Bumper Bash " - large gathering off Dobbins Island in Magothy.
DNR had to spend a lot of money for man power on that event - it more / less just grew too large.
The way I read the ruling - would only apply to scheduled raft ups , not a group of boats who just happen to be in one area.
I'm thinking some of the poker runs or other large organized boating events.
Heck , if it applied to boats fishing - every pod of breaking fish in summer would need a permit.
What could be more mundane than dying of old age or of natural causes when there is death by misadventure to be pursued ? Skip