https://en.wiktionary.org/wiki/git#Etymology_1
IMHO as far as offensiveness is concerned, 'retard' is pretty far down the scale... and regardless of whether they have the right to do this, I think this whole "politically correct" movement is a pretty disturbing trend. It's basically encouraging people to become offended more easily, and turns straightforward easy-to-understand conversations into watered-down vague doublespeak-ish verbiage. (If you've worked in any large organisations with similar policies, you'll know what I mean. I left that culture behind years ago and don't regret it one bit.)
Are there any GitHub equivalents that support the ideas of free speech and expression (within what the law allows)?