Men's Bodybuilding has always been muscularity vs. symmetry. It is hard to accomplish both, although quite a few bodybuilders did it (aka Flex Wheeler)
But, we have a ton of fans that want to mass monsters, aka the Mr. Olympia. A lot of fans that believe that these guys are the ultimate form of bodybulders. Markus Ruhl, Dennis Wolf, Phil Heath, Kai Greene. These are the guys that draw the hardcore fans.
But, Classic Bodybuilding is the days of classic poses, where symmetry ruled, not muscularity. There are fans for both.
Funny, when I am backstage sometimes, and I ask some of the modern bodybuilders (usually amateurs) to give me a classic pose, many of them have a hard time on it, as they don't practice on them. (Think of Arnold poses)