@Dionsol465, a 3rd-party is using mega.nz, dl-file, dropbox, etc. YouTuber’s are re-hosting an authors work onto these sites.
If someone uses another person’s content and re-host it, I will inform them about and tell that author to DMCA that video. That YouTuber deserves the strike and channel to be known that they’re a scumbag. After 3 strikes, YouTube will delete the YouTube channel.