https://www.cnet.com/news/youtube-adds-stricter-rules-for-creator-ad-monetization/

The video site said Tuesday that human reviewers would scrutinize every video in Google Preferred, its elite ads program accessible to top creators. New videos uploaded to Google Preferred channels will also have to be manually verified to meet YouTube guidelines before they can run ads.

"There's no denying 2017 was a difficult year, with several issues affecting our community and our advertising partners," Paul Muret, a Google vice president, wrote in the blog post Tuesday. "We are passionate about protecting our users, advertisers and creators and making sure YouTube is not a place that can be co-opted by bad actors."