People who are legitimately excellent at what they do start with the realization that they can always be better and that that includes updating and altering even basic procedures as new information comes along. And that realization means that they are thus never "doing it right," but only, at best, "doing it well."
Well, GUE keeps updating policies and procedures, as they regard their creation and consider how it could be improved. And then we get laughed at because what's "right" has changed . . .
You know, I know a couple of DIR people who have some attitude. I don't like it, didn't like it when I first ran into it, and it's been applied to me, believe me! But it didn't stop me from looking at the system itself and seeing what it had to offer. It didn't stop me from taking instruction where, as I look back on it, I think Rainer is right -- No one ever said anything about "Doing it Right". We were taught "How we do it". In fact, one of my most powerful scuba memories so far was totally screwing up an air-share drill at the beginning of a training dive, and being told by the instructor, "You guys can blow it off if you want. You don't HAVE to do it. But this is what WE do. WE start a training dive with an air-share. You can do what you want." Nothing about doing it right. Something about stepping up to the bar, though.
But, as it has happened over time, I don't hang out with anybody with attitude. I hang out with a bunch of DIR divers who have great joy in diving, and trying to dive well. We don't always pull it off, but I can say that, with the exception of a few very discouraged moments during classes, we always have fun, and we dive safely. The system lets us meet new people and instantly form working teams, and we all understand each other.
When I read the reports of horrible instabuddy experiences on dive boats, I just give thanks that I was well trained, and that I got trained in a system where, if I go somewhere and agree to get in the water with someone else of my training level, the chances are overwhelmingly good that we won't just do okay, we will pull off a dive that delights both or all of us. Had it happen here at home, just two days ago.
I don't there's anything wrong with anybody who is diving carefully, respectfully and safely (so long as they aren't kicking up silt, that is

) but I wouldn't give up the way I've been trained to dive for anything.