Arnold had hard veiny muscle in his calves. If it was a silicone bag or oil inject it would look like Flex's or Big Lou's calves.
I don't get the Piana thing. He was entertaining but bad for the "sport". Does anyone think he was good for this subculture of a sport for the general public? Every thing about him screamed drugs and oil. He had trouble breathing running out of breath just standing. How did he make his wealth? Some say supplements but was it supplement sales or was it "supplement" sales?
Normal people who came across his videos on YouTube left little doubt in their comments that he was everything the public hates about bodybuilding: The meatheads, the egos, the penguin-walking invisible lat syndrome juicers he kept around him, the excessively loud yelling and grunting in the gym, 5 guys hogging the same machines and egging each other on for bigger lifts, and of course the obvious drug abuse.
He had fans, lots. But those fans also like Jason Blaha and Kali Muscle. They're mostly 16-34 year old white males from lower middle class backgrounds who don't actually lift or use drugs - they idolize this guy because
he lives the life they wish they could live. This isn't new. It's the same reason normal adults admire celebrities and sports athletes - they live vicariously through them because they lack the talent, good luck or connections to live that life themselves.