Even about 10 years ago, when I was a guide on the Arkansas river in Co, we always supplied helmets for our customers, it was at least company policy, if not a regulation for outfitters, that guests had to where helmets on class 3 and up.
Our company also required guides to where helmets, if the customers had to. Getting launched without a brain bucket, into a boat full of helmet clad paddlers, is like being thrown into a boat full of rocks.
That fatality sounds really tragic, and sadly, avoidable.
We can't always agree, but we can still be civil to each other.