YouTube is crucial part of the misinformation ecology. Not just a demand issue: its recommender algo is a "go down the rabbit hole" machine.
You watch a Trump rally: you get suggested white supremacist videos, sometimes, auto-playing. Like a gateway drug theory of engagement.
I've seen this work across the political spectrum. YouTube algo has discovered out-flanking and "red-pilling" is.. engaging. So it does.

“I started the site for a easy way to make money,” said a 17-year-old who runs a site [from Veles] with four other people. “In Macedonia the economy is very weak and teenagers are not allowed to work, so we need to find creative ways to make some money. I’m a musician but I can’t afford music gear. Here in Macedonia the revenue from a small site is enough to afford many things.”