Again, I wasn't there so I can't speak to the quality or decisions of the RC, and there is probably more to the story (there always is). I've personally witnessed, from more than one Signal Boat (at more than one major event, with lots of assets on the water), some pretty gnarly stuff happen; and self-rescue (or rescue by fellow competitor) is sometimes the only real option.
I do agree that everyone should wear a PFD and carry a VHF. But, those are just my opinions based on my personal experiences. Good luck getting those things mandated.
Mike