In general commercial media is seeking ad dollars, even though its saying some crazy things it still has some limits. In addition, it has a limited number of guests and they tend to get limited to 'interesting' individuals.
The internet is not limited in such a fashion and the echo chambers and feedback loops are faster.
[0] A little while back I was at my parents' house and they had Fox News on in the background (of course) and I noticed that this has now gone so far that everything at the bottom runs with a big "FOX NEWS ALERT" tag and all the trappings that come with some kind of urgent announcement—for every little mundane thing, no exceptions.
You're late by about 200 years.
There was an unusually long period from the 1930s through the early 1990s where, due to a set of overlapping partisan realignments, the divide between the major parties did not line up with the main axis of polarization, such that after the end of this period with the crystalization of the partisan alignment partisan polarization increased, but the prior bipartisan era was not one of low polarization, but merely of poor alignment between party and salient ideology.
America’s intense partisan polarization is it's normal state.
To me it seemed so utterly bizarre I had problems processing it.
He was ranting about how the police were rounding up the homeless, chaining them to beds, and then "blowing up their lungs".