ElectroBoom: https://www.youtube.com/watch?v=EjN3j0jZirs
Abroad In Japan: https://www.youtube.com/watch?v=r5lMM160etI
AvE: https://www.youtube.com/watch?v=tSxgn0_yU-8
Neistat: https://www.youtube.com/watch?v=HZakJFqdpRY
Philip DeFranco: https://www.youtube.com/watch?v=SOa6PA8XQtQ
Sid Alpha: https://www.youtube.com/watch?v=pe5eODFxwy0
Reddit has a lot more examples https://www.reddit.com/r/all/search?q=demonetized&sort=top
But Google doesn't want to risk the PR nightmare of admitting that they no longer want 99% of their userbase poisoning the well for the 1%, so they use pretexts like demonetizing content to encourage them to go elsewhere.
It's probably not true, but Google either seems to be fantastically inept or malicious at this point, when it comes to their interactions with content creators and their UX.
https://www.nytimes.com/2017/04/17/arts/youtube-broadcasters...
http://www.tubefilter.com/2017/05/04/how-youtube-adpocalypse...
It started when some big advertisers made waves about their ads being placed on "extremist" videos on YouTube. Some quit Google's network at the time, too. To beg them back, Google essentially started removing anything that might upset those big advertisers. Like anything at all.
The "demonetization" actually came a bit later when there was backlash against those removals from users, so it was Google's way to "compromise". It wouldn't remove the more "sensitive" (but not extremist) videos, but it would demonetize them without much thought.
There is actually a really simple solution here that nobody wants to talk about.
DO NOT MONETIZE YOUR VIDEO
It's probably the only thing they can do, but it really is an awful way to treat people who should be your partners.
https://www.reddit.com/r/youtube/comments/7b3v93/12million_s...