Marley's innovation, borne more of industry marketing than his own creativity, was to put reggae music into the rock idiom of a live band performing the songs for an audience (which, in Jamaica, did happen but was more of an "uptown" thing, or for tourists), as opposed to the sound system culture which nourished all preceding ska, rocksteady and reggae and subsequent reggae and dancehall. It can be fairly credibly argued that dancehall, sound system and deejay culture, charmingly referred to as "bastardised reggae, with somebody yelling drivel" is actually a more authentic musical representation of the Jamaican "folk" in 2016, because it is an organic product of the history of Jamaican music as it is performed and consumed by Jamaicans themselves. And lyrically it is no more or less "drivel" than anything that came before.

(The above sounds far more dismissive of Bob Marley than I intended. I am actually a huge fan.)