You're welcome to your opinion, mine differs with yours based on the training I've seen by other instructors coming to our springs to teach...
So you are saying there is no reason to teach any more self-reliance then is already taught, correct? And what amount, in your opinion, is being taught? Please quantify.
Quantify eh? Ummmm ok, the number is 23!
More seriously, the instructors I've had, most particularly those I work with, are very upfront that a diver is responsible for themselves. While they don't go into solo diving considerations such as pony bottles in OW, they do mention their uses in other diving situations.
While they stress the importance of having a dive buddy, they also stress that a diver is responsible for their own safety at all times. From the responsibility of calling a dive at any point for any reason if they feel uncomfortable, to considerations of the diver's responsibility to their own safety over their buddy's in situations where things go wrong.
They even note in their OW class that a student should disregard an instructor if they believe the instructor is endangering them in any way. My favorite instructor tells people in every class something along the lines of:
It is my job to instruct you to the best of my ability, but I don't know everything. It is your job to keep yourself safe and alive. If you think I'm wrong on the surface ask! If you think I'm wrong underwater, call the dive.
Again, can you point to anything in the PADI instructional material that states that buddy procedures are the only solution to any problem, or even that such procedures are always best?
Self-rescue is taught from day one regarding low-air and out-of-air situations. And in every course beyond then, the responsibility for the individual to look out for their own safety is taught as well.
Maybe you think PADI is wrong to tell OW students that if they find themselves OOA that they should use their buddy's octo if available?