Earlier quoted context omitted.
Stallman also had a reason for that. If he wouldn't insist on respecting GPL for GCC, there would be no GPL licensed Objective-C compiler, because Jobs would simply never free-source it.
Except that clang is free, under a completely open license, which completely and utterly negates your second sentence.
It's called knowing history. Just because two decades later Apple decided to fund open-licensed clang does not negate my second sentence. Clang was no longer considered competitive advantage, like ObjC was at the beginning of 90s.