i agree its a risk and tris did have more than a few upsets over the years and the locals were more than happy with them.
Having had to shut one down on a twin turbine fixed wing I am more than happy not taking the risk of ending up in Channel Islands waters.
If others want to take that risk that's fine by me.
But then again how many rotary flights happen daily around the world with single pilot, single engine, and people willingly enjoy those, me included.
you really don't want to look at the survival statistics for those flights. If they could hold a tri's worth of punters and they all died every time one crashed it you would have a A380's worth of dead punters every year. But as its only 2-3 at a time nobody notices or cares.