The limits of that training are clearly laid out in the manual. I quote:
1. Edge of light zone
2. Linear distance of 40m/130ft
3. One-third of air supply
4. Space to narrow for two divers to pass together.
These limits are identical to cavern training and defined as recreational overhead environment diving.
View attachment 452108
Page 37, Recreational Penetration and Technical Penetration.
The manual quite clearly states that these recreational wreck limits, as taught on the course, "sprang from cavern diving".
Nobody claims that the course is a technical level course. Again, that's repeatedly and clearly stated.
Nonetheless, the manual, as quoted before, clearly says the training is appropriate for recreational wreck penetration.
That's always been my point. Same penetration limits as cavern, but woefully less training, vastly lower instructor requirements and significantly less dedicated penetration time on the course (or none, if desired).
The manual quoted is version 2.02. This is the manual currently available here in the Philippines as supplied from PADI.