Comedy shows have become the news, including the alt-comedy shows (usually known as conspiracy shows). However it is true that even with the internet there is still more of an issue when actual tv network people do this kind of thing, than when web-based (or cis-web based) programs to it.
I think that Colbert has played his part in fueling the polarization. Not due to his anti-Trump sayings (i think most people dislike Trump anyway, including many of those who voted for him), but because of how kneejerk his routines are. And ok, he may say his program isn't news, but it happens to be of the same low level as news programs, some of which appear to even aspire to be quasi-comedic or trolling in a tone which isn't miles away from Colbert's comedy or acting.
He is a good comedian, yet things have got real for a while now. I think the mainstream vs alt media thing won't go away, and tensions do seem to rise instead of diminishing a bit. Sad that US couldn't have a decent potus, but that much was obviously going to happen when both your candidates were crap- and Colbert didn't help avoiding that either; he was going on about lame "choose the lesser of two evils", as if people who don't have money give a crap about such a position in the first place.
My view is that the alt media are trolling, of course, but they would not be popular if not for the mainstream media also being ludicrously and pitifully dumb. Which sort of is a parallel to why Trump won against Hillary.
Amphipolis was where the first part of the Peloponnesian war was concluded, by the leaders of both Athens and Sparta meeting their death. I think we are moving on to something closer to Aigos Potamoi now.
-You can discuss the fake news/mainstream vs alt and similar/tied issues.