coastalpilot,
I think you are being a little to narrow in your analysis.
YES an IP should have detected, called, and ultimately corrected the low-speed situate=ion, but, then so should any competent FO- AND, new to type or not, the LHS pilot was not a cadet- he was an experienced commander changing types, who already held a Type Rating on the Aircraft. Maintaining airspeed on approach would not seem to be an unreasonable expectation.
While you are quick to find an individual to blame, you miss asking an important question- WHY would an IP, even an inexperienced one, not monitor and correct a low airspeed situation?
THAT is where a deeper investigation into attitude, training and culture may reveal problems we can fix.
Simply saying "It was His fault" does nothing to prevent things like this happening again.