There is no such thing as a "system for fair use", it's somewhat ambiguous and legally the matter is decided in courts. YouTube doesn't have the authority to sy

There is no such thing as a "system for fair use", it's somewhat ambiguous and legally the matter is decided in courts. YouTube doesn't have the authority to systematically make decisions on this, although does have a program for creators that deal more frequently with fair use: https://www.youtube.com/yt/about/copyright/fair-use/#yt-copyright-protection https://www.youtube.com/yt/about/copyright/fair-use/#yt-copy... https://fairuse.stanford.edu/overview/fair-use/four-factors/ https://fairuse.stanford.edu/overview/fair-use/four-factors/