>>rngnam+(OP)
Sure, but it has the same problems. Who makes the labels, and do you trust that consensus? It would simply take seeing some cryptocurrency cult webinar being labeled "educational" or something to that effect before suddenly the labels become as much noise as the "related videos" section (made up over half of your recommendations instead of related videos).
It could also go the other way. Add a "misinformation" label and suddenly everything is misinformation, from Jordan Peterson speeches to live recorded NASA space launches to Spongebob clips.