For the same reason, your system fails to work for either traditional or copyright-expired compositions. Someone may still own the copyright in a specific recording of a traditional folk tune, but that does NOT mean they own any rights over my, different, performance of that same tune. I have had a highlight muted because of this exact situation; a muted highlight from a live music stream is no use to anyone! And there is no adequate way of contesting the action on these grounds. Copyright in compositions and recordings is separate; get someone who knows the basics of the law to overhaul your systems for dealing with music copyright because they're laughably inadequate at present.

I recently had a GB Tetris stream get muted because the copyright bot's song IDing listed "Ikon Ringtones" as the owner of the song.

I can say with full confidence that "Ikon Ringtones" does NOT own Hirokazu Tanaka's 8-bit rendition of a Russian folk song. And that's been the problem for years - bad actors clowning around with copyright claims for video game music they don't own. Not only do establishments like "Ikon Ringtones" get away with it for using video game music as ringtone options, insignificant nobody DJs have also been known to do it when they sample music from a video game and then streamers get muted for nothing more than playing a video game.

It's high time Twitch allows us to appeal muted streams based on the supposed claimant clearly not owning the rights to the music, and puts more manual effort into identifying these bad actors and disqualifying them from further copyright claims without definitive proof that they are the owner of the copyrighted work.