There's also the free culture movement, which generally believes all creative works should be free, not just software.

There are many people who would advocate for free software and not free culture, but jxself has also written in support of free culture: https://jxself.org/drm_and_free_culture.shtml

That post is from 15 years ago, so of course he could have changed his views since then (but I don't see any evidence of that in this case).