Yes I do teach only what I'm told. That way my insurance is always valid. When PADI took the decision to change the skills for the AOW deep dive (that is to compare colours at depth, rather than do a Narcosis test) I complied. I didn't agree with it but I still followed standards.
There equally too many instructors out there who teach their own course and then pick from a series of certifications to give to the student. Tech instructors are the prevalent practioners of this. One example when a student could not complete physical skills for an IANTD Normoxix trimix course the Instructor gave him a TDI license instead. That is not teaching, that is a dangerous mentality.
I have skills and experience way above what is needed to teach the OW level, after all you can become an instructor with only 100 dives. How much of my own dive history comes into the course, only what is relevant to the course and only if it does not task load the student.
I teach my students how to dive,how to control their buoyancy, plan their dives and be safe divers all within the PADI framework.
You seem to have a poor opinion of TDI based upon your experience with one instructor from this post and your introductory post in T2T. Within the PADI framework you are right to teach that way. It is a highly regimented system. Other agencies allow a lot more flexibility. Flexibility respects the knowledge of the educator.
I'm an instructor trainer examiner for PSAI and PDIC as well as being a TDI instructor. I won't issue a dual C-card unless the student has met all the standards of both agencies. In fact, in many training agencies it is a standard that the standards of both agencies must be met for a dual certification.
My personal standards are high. I task load my students under the belief that the more we bleed in training the less we'll die in combat. Since the framework of the agencies for which I teach is flexible, I find it allows me to be a better instructor.