I'm not surprised that the video has been taken down since it explicitly talks about circumventing youtube ads or alternative interfaces to access youtube (newpipe, invidious etc) - https://www.bilibili.com/video/BV1eT421r79x?t=1058.8

One thing which is missing in conversations about circumventing ads on youtube, is that such users are also depriving content creators of their income. For those who don't want to watch ads, feel free to subscribe to youtube premium to support creators(or directly support them).