Stallman can be blamed for the rise of Clang, basically. He for instance prominently refused to have GCC dump the full AST because of concerns of what people m

Stallman can be blamed for the rise of Clang, basically. He for instance prominently refused to have GCC dump the full AST because of concerns of what people might do with that which could infringe on software freedom: https://lists.gnu.org/archive/html/emacs-devel/2015-01/msg00015.html https://lists.gnu.org/archive/html/emacs-devel/2015-01/msg00... And that sort of thing suddenly made the non-GPL competition relevant and better. Now LLVM isn't a tragedy by any means, it's an excellent piece of software. But here we can see Stallman sabotaging his own mission, and resulting in alternatives to GCC being popularized, and written under licenses less favorable to FSF's mission.