This stuff was addressed years ago, in the 25th Anniversary edition of Pumping Iron DVD, in the “Special Features” portion, “Iron Insights”.
3 – It's safe to say that Arnold exaggerated the issue of drug-testing in the IFBB. Yes, he did talk openly about his past steroid use, as he always does (after all, steroids weren't illegal when he was competing). The IFBB does have testing. But, from what I've seen, it happens primarily among the amateurs; and most of that is internationally (i.e. outside the USA). But, Arnold used the term, "continuously" to describe the testing protocols. I think "sparingly" would be a better term.
Another thing he mentioned that you didn't list was his comment about getting a pump. Contrary to what certain supplement companies (i.e. VPX) advertise, Arnold DOES NOT believe that a pump is as gratifying as (or more gratifying than) an orgasm. The Oak says he made that up, as something outrageous to garner more attention to himself and the film. To him, the feelings are mutually exclusive.
#1- Arnold did not revel the bullshit about his Dad not really dying while he trained for the Olympia-he was OUTED by Wendy Leigh in her unauthorized biography of him. So the notion that he came out with it on his own is bullshit.
#2- Steroids were illegal in the 60's, they always have been, UNLESS you had it prescribed by a doctor. Arnold, nor any other BBers of that time, had their steroids prescribed by doctors. So they were illegal for him to use.
#3- The IFBB is a professional BBing organization, they have nothing to do with amateur competitions.
#4-Arnold was LYING when he said a pump was like an orgasm. I am shocked. SHOCKED I TELL YOU!