It's interesting to me that this argument about the post-truth era is so often made, without using facts or figures to back it up. Every example you have presented here is anecdotal. Despite this narrative of increasing disinformation and fake news (which there is at least some truth to), how do you explain the fact that whenever it's tested, people who get their news primarily online are consistently better informed than TV or newspaper readers? It's a large section of society so selection bias isn't really enough to account for the difference.

It's a complete myth that people were better informed when there was just three news networks to choose from.

I don't agree with the narrative presented in this video but I've upvoted because I often watch your videos on YouTube.

Social media echo chambers are also highly exaggerated.

Edit: There are studies which show that people who primarily use Facebook as their news source are poorly informed. However, the same studies have found that to be a small demographic. In general younger people who spend more time online and get more news online, are getting their news from more diverse sources than older people, and are better informed on current affairs.