Jim - I thank you for clearly and cogently articulating the principles which, for you, underlie safe diving. And I must acknowledge that I agree with some of the points you offer.
But I must also hasten to note that my using a gear configuration which is identical to yours does not make me a safe diver or a responsible dive buddy, nor does someone else using a different set-up than yours make him/her an unsafe diver or an irresponsible dive buddy. Making, in part, an assumption of someone else's safety focus on the basis of common gear is an invitation for trouble. This sport is fraught with wanna-bes who blithely buy the anointed "definitive" gear as a sign of their so-called expertise. Dive safety is attitude, training, and focus. Your gear is just a tool.
You close by asking if I think that you are different from me? Obviously, I have no more interest in a non-safe diver or buddy than you do. And I do seem to be seeing more and more unsafe divers out there. I must therefore assume that DIR is, in part, a response by serious, safety-minded technical divers to shield themselves from a decreasing degree of safety consciousness among divers. Since the dive industry has done little to reverse this trend, it is understandable that a force would evolve to defend itself from the ravages of unsafe divers. One might, in fact, argue that the dive industry has exacerbated the situation when, in response to declining numbers of new divers, it (1) continuously introduces newer/bigger/better gear, gadgets, and accessories that allegedly will make us safer & better divers, (2) rushes to squeeze out increasingly less trained/less safe divers, and (3) under the aegis of treating certified divers as responsible adults, gives divers with uncertain skill levels lots of flexibility and little oversight. Re the first point, then, I applaud your notion of simplistic gear, reduction of failure points, and non-reliance on gadgets. But, re the 2nd and 3rd points, I would like to also see the dive industry (read as certifying agencies and dive operators) establish responsible, balanced initiatives to promote greater safety focus for all types of diving.
In the mean time, thanks again for orienting me to the safety principles you hold near and dear!