Earlier quoted context omitted.
I'm not aware of Microsoft Word or any editor I've ever used or heard of forbidding me from using the word "retards" or any other. Heck, Gnu Emacs allows me to write proprietary software, a user freedom RMS is no doubt not entirely happy with. I require that general freedom of expression in my tools and do no tolerate vendors who engage in these sorts of damaging stunts. I suspect I'm not alone, and I note GitHub has…
Could you explicitly state what it is you are referring to? I'm not familiar with github's content restrictions.
tl;dr: Observed fact, GitHub disappeared a repo (this I personally know for a fact) and all its forks, the only reason we can surmise is that it described itself as "X for retards". I believe it's this one https://github.com/WebMBro/WebMConverter now described as "WebM for bakas." (Japanglish for idiots or fools).
Per this https://imgur.com/QC51FZz it was indeed for the use of that word.
I'd be more willing to extend some slack to GitHub if they hadn't precipitously turned off their service for these repos, that's worse than this example of their "tolerance", but who knows what it'll be next?
Who knows how this will play out in the long term; their trashing of their meritocracy rug suggests this is not a one off (ADDED: and erics32 reminded me of C+=). Why should I or anyone else concerned about long term stability invest in their particular value adds when they show such capriciousness?
The great point, in relation to this topic of their latest investment, is that companies that depend almost entirely on their "communities" can screw those up and destroy their value.