As much as I recognize the irony of being outraged by outrage culture, I have to say I'm extremely disappointed and feel more than a little betrayed. It's just one instance of outrage culture bullying around everyone else, but this time it's a game I had quite a bit of both money and emotional investment in.
The demands for this to change are not connected in any significant way to people being hurt by the joke. This is about a group of people who have developed a taste for power, and managed to convince themselves that their addiction to witch-hunts and outrage are in some way servicing the greater good. It isn't. It's an effective brand strategy for a power-mad mob, and nothing more.
When they say "I'm offended", what is actually meant is that they've seen something they know is improper, unacceptable speech by their subculture's standards. In doing so, they've found a target that they know their friends will willingly join them in attacking, and that more likely than not, they can feel the thrill of exerting their influence on others.
It's entirely possible, Obsidian, that you all went along with this more than willingly. It's possible some of you are even part of the same crowd, and are excited by watching society shaped by your friends in a way you've convinced yourself is surely, surely for the best (and no judgement: I've been a part of witch-hunts just like this one as recently as a year ago, before I figured out what was happening).
Regardless, as minor as this change is (and I admit it is minor, and fully understand anyone reading this and thinking "Jesus, dude, it's one dumb joke"), you've just acted to give more power to an insatiable mob of witch-hunters. When they attack their next target (and they will), know that whoever they hurt will feel the effects of their attacks just the slightest bit more deeply because of the power you've just given them.