They (priests) were not trained and prepared for dealing with the drugs, sex, and pill, the "MJ, alcohol, self-abuse, pornography and pre-marital relations".
This is just a flawed view of how free will works and the limits of the Church to stop people from sinning. It's apparent that your personality is one of "blame everyone else first but not the individual (or yourself)". Everyone has the natural law written on their heart, everyone has free will, everyone has a DUTY to follow their conscience and KNOW their Faith. Those that sin, do so because of their own choice. Same for those that go to hell.
God will not allow anyone to blame the Church on Judgement Day. Sure, there were lukewarm priests in the 50s/60s/70s, but to be fair, MOST catholics of those days (parents, teachers, priests, etc) were lukewarm, which is why the accepted V2.
Grace is powerful enough to overcome bad advice, poor instruction and lukewarm superiors. It is infallible that God will not tempt us beyond our strength. Those that sinned, did so because of choice.