Who controls glibc?

Nobody suggested either of the above consequences happen to rms. Although I recall various other incidents that I suppose you're referring to, where a developer was pilloried for making offensive comments, this is not one of them. The only "punishment" here is the removal of the joke from the manual.

> by purging this kind of silly little thing you're establishing an atmosphere that will prevent people from making jokes

In this case, I don't see much evidence that anybody is calling for censorship of abortion jokes anywhere outside the technical reference. This was a patch to remove the joke from the manual, not a mandate to prevent rms from making these jokes on his own spare time.

> The point is: if somebody can't handle this sort of joke

The strongest argument I've heard from removing this from the manual isn't that some people cannot "handle" the joke, that it is offensive, or anything of the sort. Rather, it's a totally inappropriate comment to have in a technical manual.

(Somewhat contrived) analogy: suppose that in the documentation for posix_spawn, rms had written a snarky cartouche about his favourite restaurant for eating caviar. Totally uncontroversial, nobody gets offended. But the comment ought to be removed on exactly the same grounds as the abortion one: it doesn't belong in a technical manual, and the vast majority of readers didn't ask to be belaboured with rms's sense of humor.