The reason we're having this discussion this on this particular post because YT's AI is not infallible. There isn't a "standard rubric" - just automated correlation-based scoring derived from labeled training data. In this case, the AI learned that media piracy and self-hosted setups are correlated, but without actual judgement or a sense of causality. So YT doesn't truly "know" anything about the videos despite the AI augmentation.
I am curious what you consider to be a "standard rubric" - would that be based on the presence of keywords, or requires a deeper understanding of meaning to be able to differentiate the study/analysis of a topic versus promoting said subject.