I have a screencast of installing Debian that’s unlisted and has one view uploaded several years ago and last month I got an email saying YouTube had decided, after a review, that it is only suitable for mature audiences. I don’t know who flagged it or who reviewed it but there’s no video, only a screen share of Debian installation and there’s no audio. I think YouTube just counts on people appealing wrongful flags.

I no longer believe YouTube is more malicious than it is incompetent.