No one is claiming that apple is training their geniuses to intentionally guide people to more expensive repairs. In fact they are accusing apple of a lack of adequate training, These guys just don't know that what they're saying is untrue. Apple's failed to train their technicians to repair anything. all they can do is replace.
The commenter I responded to literally said that the genius intentionally told the customer the wrong thing. They have since edited that part out. So yes, folks right here are claiming intent where there is none.