YouTube has decided to start running ads on smaller channels, that fail to qualify as members of their Partner Program, something that they very rarely did before. So channels that are ad friendly, but have less than a 1000 subscribers and less than 4000 yearly view hours, might now be monatized.
https://www.cnn.com/2018/04/04/us/who-is-nasim-aghdam-youtube-shooter/index.html
Yeah, fuck you.