And the more you post, the more I'm convinced you have not done a lot a diving in many different places.The more you post, the more I’m convinced that you don’t know that many DIR divers.
In my cave, CCR, and other technical training, and very occasionally on recreational dive trips, I meet GUE divers, even some UTD divers, and some who profess to just be DIR by practice, not training or certification. That is perhaps 30-50k divers over the years Some are quite nice folks. Some are zealots. I can't really describe any of the non-DIR divers I meet as zealots, just some of the DIR folks.