When was the last time you booted up the Hurd kernel? I would be surprised if more than 10% of HN readers even know what that is. (Stallman actually summarily dismissed Hurd's lead developer when he dared to criticize the GFDL in public. https://lwn.net/Articles/59147/)
Stallman's abrasive and confrontational posturing is related to but distinct from his ideological goals. His rude posturing actually _damaged_ the chances of ever reaching those goals.
Even the GNU "copyleft" license -- the project's greatest success in terms of "actually impacting the world" -- has fallen more and more into disuse in favor of less restrictive licenses such as BSD and MIT.