How can I delete multiple playlists at once in Apple Music (without deleting songs)?

I'm trying to clean up my Apple Music library on macOS, but I can't find a way to delete multiple playlists at once. I don’t want to delete any songs—just the playlists. Over time, I’ve ended up with hundreds of playlists, many of them auto-created by apps like Piezo, which generates a new playlist for every recording. Deleting them one by one has become incredibly laborious. I expected to be able to Shift-click or Command-click playlists in the sidebar, then press Command-Delete or use a contextual menu to delete them in bulk—just like in Finder or Mail. But the Music app doesn’t support multi-selection of playlists in the sidebar, which makes the UI surprisingly rigid for this task. Is there any way to delete multiple playlists efficiently without removing songs from my library?