Spotify was caught before (in 2016) doing exactly that -- https://arstechnica.com/information-technology/2016/11/for-five-months-spotify-has-badly-abused-users-

Spotify was caught before (in 2016) doing exactly that -- https://arstechnica.com/information-technology/2016/11/for-five-months-spotify-has-badly-abused-users-storage-drives/ https://arstechnica.com/information-technology/2016/11/for-f... Only after publication on news sites they fixed it. Won't be surprised if the bug regressed and happened again. I don't use Spotify (not available in my country), so I wouldn't know, but I bet half of the reports are because of some badly written third party app constantly writing in 4kb chunks with O_DIRECT or fsync() all the time.