Reputation-measuring systems are a mode of social deskilling. Social media companies has an incentive to erode our natural skills of etiquette and social navigation so that we become more reliant on the companies to manage our awkwardness for us.
Authenticity is a pressing personal issue now not because it has been suddenly lost, but because it has become the accounting system for a different form of mediated selfhood; it has become another metric in the attention economy, measuring how believable one is to oneself in the process of broadcasting a self.
Social class can't be undone by democratizing tastes; the material bases for class distinctions always generate new ways of expressing cultural distinctions. A "liberated" taste for pop "trash" is inescapably an expression of habitus; one can't consume pop culture in some sort of politically populist way. Consumer society gives us ample access to its particular modes of pleasure that guarantee our consent and effort in reproducing it as a system. There is no subversive way of consuming its products; subversion would consist of ignoring them.