Yes. It incentivizes loudly taking offense to things. Regardless of whether or not you care about the use of the word 'retard' being taken offense to, there are

Yes. It incentivizes loudly taking offense to things. Regardless of whether or not you care about the use of the word 'retard' being taken offense to, there are many things that you do care about. It's trivially easy to find examples - millions of Americans care deeply about violence in games and media. Should GitHub police the language a violent open-source video game uses to market itself? By setting itself up as the arbiter of what is and isn't acceptable language, GitHub will be petitioned by people who want to make things unacceptable to say. Edit: Also, people can decide to find something to take offense over in order to attack a targeted individual. This should be very concerning to you - are you sure you've never committed anything that an uncharitable person could take offense to? Imagine a few dozen very angry people combing through your work, trying to find something to get outraged about.