When did that change take place?
I ask as a non-SDI person. I was in San Carlos, MX, doing some recreational dives. One day I was taking a very long boat ride out to the dive site and talking to the operation owner, an SSI course director who was going to finish the certification of a new SSI instructor that day. We had a very interesting chat. He was concerned about proposed changes in SSI policy that would affect what he was doing that day. The new instructor he was about to certify had gotten his OW certification from him a few years ago. He had gotten all subsequent certifications from him over the following years. When the guy wanted to become an instructor, he did as he always did when he certified new instructors--he asked him what he wanted to do with his certification so he could tailor the instruction to his intentions. Told that the guy wanted to work in a tropical resort (like his) he dropped all the instruction that would relate instead to cold water diving so he could teach him only what he needed to know to teach in warm water resort locations. He could do that because he, as a course director, could certify instructors without any outside verification. He was upset that proposed changes in the SSI policies would require an outside evaluator, meaning that he might have to teach all the concepts in the standards, not just the ones he knew his student would need for his intended purpose. He thought having to teach all that extra stuff was a waste of time and effort. That was just a couple of years ago.