It really depends on the dive site, and it really depends on the diver. Sounds like some posters need to change their depends.
I know quite a few instructor/guides who wear full foot when they can. We have plenty of shore dives that start off a nice soft beach! In the summer the tenderfoot visitors whine about the hot sand, but a lot of the Maui resort diving is done in cheap snorkle fins. The boat I dive from has nice soft carpet, so full foot works fine there too. If I'm diving Sharks Cove or 5-Graves, booties are safer. If I'm diving Tunnels or Black Rock full foot is not less safe. If I'm shore diving the Big Island booties are the only way.
I know quite a few instructor/guides who wear full foot when they can. We have plenty of shore dives that start off a nice soft beach! In the summer the tenderfoot visitors whine about the hot sand, but a lot of the Maui resort diving is done in cheap snorkle fins. The boat I dive from has nice soft carpet, so full foot works fine there too. If I'm diving Sharks Cove or 5-Graves, booties are safer. If I'm diving Tunnels or Black Rock full foot is not less safe. If I'm shore diving the Big Island booties are the only way.