That brings in the assumption that there will be a perfectly heterogeneous and broad range of viewpoints and not perhaps just a handful of viewpoints that serve to enrich a few people. Looking at the world today we really don't have that broad of viewpoints despite all of our connectivity. Comment sections play out identically when a given topic comes up on different forums. You can predict what the positions will be without even opening the thread, and if you offer an opinion that runs counter expect to be snuffed out by the majority opinions that have real marketing dollars fueling them.