mentzer was an absolute jones disciple and he followed his theories to the letter, even when jones revised his recommendations to even shorter sessions and more recovery time.
mentzer did not have an original idea at all. he basically rehashed jones' training theories and anne's philosophy.
jones was already calling bs on high volume and thus contradicting arnold back when he was pedalling his nautilus hardware and touting casey viator as the next big thing.
the fact that everyone, hit/volume, was using copious amounts of steroids was never mentioned by either camp.
the fact is, arnold never claimed jones'/mentzer's systems didn't work or were inferior. it was mentzer and jones making the claims when the reality was that neither mentzer or viator ever reached the level of physical development that arnold did, which would tend to indicate that the hit crew were full of shit.