Well, this forum allows you to say what you think, so here's my ten pence worth....:
I'm only a "low on the PPL totem pole" pilot who also travels Long Haul at least once per month..normally on BA 747-400's.
I have a fair idea of what the end result of a ditching will be in one of these aircraft. I also have a fair idea of the statistical likelyhood. However, should the worst happen, I am not in any way consoled by those lovely videos showing nice people stepping of the side of the A/C into what is presumably a beautiful Carribean sea. I say presumably because we never see the sea! The CAA does not require any formal testing of such an escape. They do however presume (as with evacs) that the plane is full of able-bodied people who have landed on a "moderately calm" sea and calmly left their seats in a sensible order....folks, us grown-ups just know it ain't going to be like that.
Oxygen masks... yep, needs to be shown even though most people won't have a clue in a real emergency. As for "breathing normally"....hmmm.....
Yes, I always use my seatbelt in flight...that makes real sense. I always check the exit options but the reality is that most of the other drills, like a number of things in flying, are carry backs to halcyon days.
Having said all that, I think it's still polite to show interest in the video and CC demos....it's their job and they have to do it. It's the CAA who need to get their act together on this one.
Anyway, that's what I think...... so there!