If you watch the linked video, it seems the guy found them because youtube's algorithm suggested other conspiracy videos instead of more 9/11 videos like he was

If you watch the linked video, it seems the guy found them because youtube's algorithm suggested other conspiracy videos instead of more 9/11 videos like he was watching. Other people probably have more relevant 9/11 videos but they were "censored" because they probably weren't dramatic conspiracy videos as youtube's current algorithm "censors", as some see it, rational and less emotional content over clickbait drama.