Keyword is probably 'allegedly'
YouTube said it will begin "prohibiting videos alleging that a group is superior in order to justify discrimination, segregation or exclusion based on qualities like age, gender, race, caste, religion, sexual orientation or veteran status."
(What is 'veteran status'?)
If a user is watching a video that comes 'close' to violating policies, the next video in the autoplay list might be from 'authoritative' sources, like top news channels. So if it recommends Fox News, it's only slightly better.
Further down the article, it says that people who make hateful videos will be unable to monetize them through ads or Superchat. So, you can make the videos and spread the ideaology, just not get paid for them.
So, this was all a bunch of nothing.