I thought this response in the comments section was particularly on-point. From a Brit, no less.
@Isaac, despite the fact that your post was about "cultural sensitivity", it is written in such a way that is highly insensitive to your own country's culture.
Judging by your country's last election results, half of the country will find your phrasing objectionable. My commentary below is not on your changes, but how you have communicated them.
I would echo your own advice: "be respectful". Avoid writing the updates using provocative or polarising language and phrasing. The way the update was written is not "welcoming to a wider audience" because of its focus on current politics.
Probably the best example of this is in your final paragraph. Instead of the aggressive phrasing: "We've already done that for a couple people who didn't think black lives matter, and we'd be happy to do it again" I would recommend a conciliatory phrase like: "We regret that some people will not agree with this direction, and offer to provide a full refund if you are concerned."
My closing advice is that many people play games to escape from politics. If you made the changes without announcing them this way, most people would not notice or care. Framing your latest update in the language of current politics does not alter or improve the game, it only being "combative, disruptive, or derogatory".