Re: The law of Unintended Consequences applies....
YouTube is already taking action on this.
It has forced creators to specify whether their content is suitable for children or not. That is a mandatory setting which creators have to set... (either channel-wide or per-video) but I didn't see a clear time line for this.
On the face of it, this is now shifting responsibility to the creators for classification, rather than relying on automated systems, or small armies of people in different countries (and thereby different social standards) to rate videos.
Whether such an action will save YouTube from being sued if a creator makes an incorrect classification on their video... is open for debate... but it does shift the goalposts away from YouTube a little.
Whether Faceache can achieve the same, however, is another matter.