That relies on their detection actually detecting the right piece.
I once recorded myself playing Beethoven’s “Pathetique” sonata, mvt 2. It gave me a strike for a recording of Beethoven’s “Moonlight” sonata, mvt 1.
edit: of course, in both cases, the thing is public domain, and no company has any right to claim copyright on it. The fact that YouTube lets them is fucking criminal. And it was the piece itself that copyright was being claimed on, not the recording.