This makes more people distribute OSS, and most devs do probably not care as much about OSS licensing as RMS would like and therefore do "mistakes".
RMS has a high horse stance, I think that easier access to OSS is better even though it might come with some side effects.
This argument of 'Oh, he'd be singing a different tune if he had to deal with today's reality' is so naive.
The fact that he doesn't (/doesn't have to) deal with everyday reality is his whole point -- he has claimed that it is unrealistic to use software that confirms to his set of values, so he denied to participate in that reality.
Some repositories take this to the extreme. There are some closed source software vendors that use GitHub as an issue tracker and collection of Markdown files.
If GitHub wants to permit such uses - it's their party.