Under the assumption that this isn't trolling, Laurens has the best answer. The problem is that many people become offended when someone says they aren't doing it right. DIR is more than a set of equipment, it's a thought process and a teamwork methodology. Everything is designed so that the team can take on some of the most demanding dives in the world and do this repeatedly and safely. A DIR diver form the US should be able to dive with a DIR diver in Europe with little problem underwater, despite a language barrier.
The problem, as I see it, is that many people are offended by the insistence that there is one way to dive. "What's wrong with my jacket BC and split fins"? Nothing, but they aren't DIR.
There are few, if any, people who are 100% DIR all the time. There are a lot of people who pick and choose what they want out of the DIR holistic approach. They are no more DIR than anyone else (DIR is all or nothing) but by thinking about the situation and making a rational choice, they're probably a safer diver for doing so.
Listen and learn and ask questions. At the least, you may learn a few things that may make you a better diver.