Let's take this one point at a time.The quote offers nothing to support his position. Had he listed the skills left out of a PADI OW class that are required by some other agencies as his reasoning, he would be in a much better position to defend his opinion.
your post also offered nothing to show his statement isn't spot on. What about PADI's OW class do you believe refutes his position?
1. Drew Richardson has a Doctrate in Instructional Design.
2. Anyone can compare the OW materials between PADI and SDI and see that PADI has them beat, hands down.
3. PADI teaches the dive tables. I know some SDI Instructors who don't even know the tables.
4. Relating to #3 that makes a PADI Instructor better able to answer questions posed to him/her regarding a lot of what is being said on this thread.
5. Ask a lot of agency professionals where they got their first Instuctor card.
6. PADI changed the way classes were taught back in the 70's. It moved it's focus to more mainstream instruction and more people were getting certified. Without more people, we wouldn't even have computers available for diving. There would be no money in it for the manufacturers.
7. TDI was where SDI started, because the big money is in recreational diving, for the agencies. The more people Instructors certify, the more money the agencies make.
That's just off the top of my head. I certainly don't mean to steal anyone's thunder.