This is insane. I definitely was not aware Spotify DRM had been cracked to enable downloading at scale like this. The thing is, this doesn't even seem particularly useful for average consumers/listeners, since Spotify itself is so convenient, and trying to locate individual tracks in massive torrent files of presumably 10,000's of tracks each sounds horrible. But this does seem like it will be a godsend for researche…
Largest example: a lot of Russian music is not available on Spotify because of the Russia-Ukrane war, and Spotify pulling out of Russia. So they don't have the licneses to a lot of stuff because that belongs to companies operating within Russia.