I'll be honest, I didn't watch the videos. Not because I wasn't interested, it's just because of the time, people are sleeping in my house. (It's 2 AM)
But I do have a theory other than the tired old argument that the media is biased, which by the way has merit.
My theory is constantly confirmed by the various threads on these boards and also the echo chamber effect which is also on display on these boards.
I think too many people listen/read/watch the news that they like and that's all the news many people will digest. The left pays attention to left slanted news and the right attention to news from right leaning resources. Of course some folks go to more or less their favorite talking points sites. So we end up with duplicate threads and posts repeated over and over and over almost word for word by their several fellow ideologues. After awhile it really gets boring.
I don't know, but I like my news from resources that would be considered non-biased and then I do research via non-partisan resources. I'd rather figure things out by myself than goose-step to opinionated resource.
Anyway, that's my theory and damn it, I'm sticking to it.