I have a lot of rare stuff. Demos, live albums (grateful Dead, dmb), live captures of daft punk at Coachella, underground hip hop mixtapes, CDrips of local punk and Ska bands from the 90s
I haven't had an active subscription for a while (when iTunes was the desktop app instead of Music being the desktop app) but I distinctly remember being able to set metadata in the Info panel on a song or multiple at once that prevented fingerprint matching.
Fingerprint matching barfs on all this stuff.