Its his go to default as he's so thick & stupid he can't come up with
anything else himself.
Very Clearly a Sub normal reject obsessed with HIT 
Like I said train the way you want. If you're obsessed with telling the other guy is wrong it shows he lacks confidence. HIT guys use to be rude assholes to anyone that didn't train the way they did. Now RMJ has reversed it preaching the volume side like a religious zealot.
Casey Viator use volume and plenty of it for his best ever condition for the 1982 Olympia. A guy that posted here whose name escapes me use to write for Ironman. He said he counted Casey's sets and he counted 16 for one body part when he was in the gym with him.
In the track world guys that train for the sprints don't go out for long distance runs. They are doing short hard repeats. The hardest sprint event is the 400 meters. You will never hear a 400 meter runner say to a 10K guy your training is easy because you use volume to train. On the same token you will never hear a 10K guy say to a 400 meter guy your training is easy because you hard high intensity repeats of 800 meters to 100 meter repeats and never go for 10 mile runs. Both are hard training. Yet in the lifting world one side always insults the other.
I realize why Arnold got mad when Mentzer said your training is easy. Arnold busted his ass day in and day out. It's apples to oranges. If intensity was the key we would all be doing sets of one rep to work out in the most intense possible manner.
My opinion doesn't matter. Train the way you want. For a busy guy a high intensity routine like Yates will take you far without the crazy time commitment. I do think muscles get bigger through muscular endurance training as in volume. When I do one set to failure I look good. When I do two working sets close to failure per exercise I look better. Nothing wrong with using 3 or 6 sets of an exercise either. Just a different type of stimulus. A person using 6 sets of a barbell curl might do the first 5 sets stopping before failure and the last set to failure. That's a lot time under tension and certainly hits the check marks for using muscular endurance.
I think Jeff Everson talking about the topic said it best, "Until pigs fly you don't have to be a scientist to be a bodybuilder."
On a side not Jeff was watching the ABC's Superstars show and watched Big Lou and Mentzer struggle with push jerking 300lbs. Jeff went into the gym the same day as the program aired and did it ten times in a row.