Earlier quoted context omitted.
Nobody who removed the joke said they were offended by it, they just said that they didn't believe it was the sort of thing that belonged in technical documentation. If anyone is offended, it is RMS, in the sense that he seems personally affronted that he doesn't carry the line-item veto power he thinks he had over all of GNU and people did not ask him before removing something he added 25 years ago. Not everyone who…
Technical documentation isn't the place for a joke full stop. Documentation is for people who are typically busy, uncertain and potentially dealing with something that is going wrong. They want clear, concise and accessible help. They don't want or need tasteless jokes. It is disrespectful to their time to include random garbage. This is supposed to be read by people who need it, not people who know what is going on…
I do agree with some professionalism in things that want to be taken seriously. I don't even really like the "Apt with super cow powers."
I do agree this isn't about political correctness. At one time GNU tools were just a bunch of devs trying to write open source tooling for fun or to learn. But with it being such a huge part of our industry now, it does need to grow up.
If you're working on your own small open source projects, have fun with the docs and comments. But don't be like Stallman. Realize if your tools are really successful, those quips might get cut out one day. c'est la vie