Creative Commons doesn't mean you can't put it on Spotify iTunes Etc. It just means it can also be distributed on platforms that aren't part of the music industry copyright and licensing system.

One advantage of doing it this way is so your music is widely available even if the platform of the day goes away and you're not on top of it to migrate to whatever's current.

Check out more about this here https://creativecommons.org/about/program-areas/arts-culture...