I don't have any problem with him denying steroid use if asked.
I just dislike the fact he constantly promotes himself as being a "drug free" and "natural" bodybuilder. Literally, every video I have seen him in will consist of him telling everyone that he's 100% natural.
I actually get the impression that he has said this so many times that he truly believes it now. 
Mans got to make a living, and if he said he didn't go the natural route, he's just another roided up douche.
You guys have to realize the majority of people buying this shit are buying it BECAUSE they buy into the bullshit, they think steroids are the devil, they don't want to be associated with such horrible things, so if they find a way to look like that naturally then they're goign to spend their money.
It's stupid, and it sucks, but the average citizen puts roids on par with coke, heroin, and meth, thanks to our beloved federal government.
DLB does it as well... it's their niche, it's how they make their living.