yeah if you want to use it as your personal public CDN is perfectly fine, remove private stuff from it, create a dedicated folder for your publicly shared media and done, just share the files you want to be posted on this kind of platforms as nostr or even SN.

I did it as a test, with mp3, mp4, images all kind and are displayed perfectly fine. You just need to configure your media engine in your NAS. Have your own youtube :)