The faulty approach video was a typically crap American if-I-say-it-loud-enough-it must-be-true type video.
These companies are interested in making money...period.
Much like listening to politicians one has to dig deep to find the truth when these schools put their trained seals on tape explaining anything.
We can not blame the instructors because learned ignorance will in their minds be reality.
Why have laws of flight and not understand them?