Re: "I have already found that the content ID filter"
there's also the other side of ContentID, the one that flags videos that include CC0 and public domain music for copyright infringement. The one that gives you no way to really escalate it when the claimant "disputes" your claim that using CC0 music really isn't copyright infringement.
requiring ContentID on everything only gives power to people that can hire a lot of lawyers – publishers – not small content creators