I think you are right Andy. This week the result of an inquest revealed the cause of death of some pleasure boaters in Loch Fyne, in Argyll revealed they were 2 or 3 times over the drink drive limit, when they hit rocks. If you are going to cruise around in the dark at 25 kts with a skinful, you are an idiot.
I like a drink, but I dont mess with mother nature, nor put my crew or passengers & friends, as a pleasure skipper, in any danger. I have superior knowledge of the sea to them, and I convey them from A to B using those skills which are learned from the school of life. I should be allowed to enjoy a glass of wine or similar myself whilst enjoying a social trip, but stop at that, before imbibing more than what is accepted as a drink drive rule, for the preservation of my vessel and its precious cargo.
The Idiots that are on station on any vessel who disregard these rules do so to the detriment of their crew, their cargo, the environment, and others who must navigate around their incompetance, Rules for alcohol can't come soon enough.