Sadly, the truly anonymous Hooktube is no more. I think they were threatened with legal action around the beginning of July. Hooktube is now no more than a YouTube OEmbed in their website, which gives all the surveillance demographics to Google. See the author's @swack Tweet at https://twitter.com/swack/status/1018665375364501506

It's too bad -- the original Hooktube had facilities for downloading the video in various encodings and resolutions, audio-only, &c. For that, there's still youtube-dl https://youtube-dl.org/