Phantasm (nprofile…s2sp) Suiseiseki is an extremist and thinks every published work should use a free license.
Stallman is more moderate. He only believes all works that are designed to do practical jobs (software, recipes, educational books, etc.) should be free. He also believes works of opinion and works of art or entertainment do not have to be free. He does support copyright on those to be reformed to a maximum of 10 years after publication.
Source: https://stallman.org/articles/guardian-correction.html