Like I said earlier, if you mean something like social media, then I agree. When I say social media, I also mean our new ways of ingesting media, eg short form text, memes, podcasts etc (though should probably use a different term.) I think there are a bunch of pernicious effects and incentives which have made seeing the humanity in those with whom we disagree difficult and compromise impossible. We don't need propaganda, people in general are just not able to handle the information landscape that's been created.

But, if you're really talking about even the spread of more independent written media etc, then I just don't see their limited readership being the fundamental game changer that we've seen.