The easiest way to make noise within a community is to divide the tribe.
Modernism, classicism, realism, impressionism--dividing things into schools of thought--or even warring camps--makes it easy to create tension and thus attention.
I'm running out of patience for people who would further their personal or media goals by dividing us in exchange for a cheap point or a few votes. If members of a tribe encourage schisms and cheer on the battles, is it any wonder that it's hard to create forward motion? When we're not in sync, power is dissipated.
Thoughtful conversation, dissent and disagreement are an essential part of growth. Intentionally pitting people against one another to make a few bucks is dangerous self-indulgence. The hardest part of being patriotic to your cause is rooting on the whole even when it's easier to be a cynical critic.