A former member of ScubaBoard, Dan Volker, was a the heart of the early DIR days. He is one of the 3 people in the famous video with George Irvine. As he explained it in a thread before he was banned, he, Irvine, Bill Mee, and others decided that the DIR approach was so important that the word needed to be spread to the rest of the diving community. According to Volker, he was specifically given the job of spreading the word within the recreational community.
Some of that effort is still active in the diving community. For example, here is a
live link to one of Dan's messages to the faithful. It is one of his milder missives. Note that he tells DIR divers
Try to dive only with people you know are safe, and who dive the same procedures and configurations you do. If you are "stuck" with someone you see gearing up badly, with a poor configuration, try a good natured explanation of why the "Doing it Right" system would have him/her configured differently. Perhaps you can get them safer on this dive.