When I see politics in software updates or documentation, nothing happens because I'm not looking to use the software for political activism. Maybe I tell my adblocker to remove the messaging, and carry on with my task.
I can engage with politics in a social context, when political messaging isn't interrupting something else I'm doing; that's a better place for activism, IMHO.
I almost always see activists using the argument that if I don't like the messaging then I'm part of the problem. Somehow I doubt that, given I don't mind messaging at all, where it's appropriate.
So, while I fully agree with your stance that banning political discourse is support for the status quo, I also think that it's reasonable to ask for it to be toned down a bit, especially when the politics and social issues of one country is basically drowning out everything else.
All that said, I'm talking mostly about HN or other community forums here. The owner of Notepad++ has the right to put whatever they want into their software, and if we're discussing that here on HN then it's an occasion where discussing politics is valid.
When I care about politics I’ll deal with actual politics. Reddit won’t change my mind nor the world.
For example it's very normal for the Tor project to talk about censorship and privacy. It's also fairly normal for Russian maintainers to speak out about how it's no longer possible for them to receive support due to sanctions. And I can understand if a Ukrainian maintainer has to focus on trying to survive or escape the country instead of developing their software. All of that stuff is completely fine and I wholly empathize with it. It doesn't bother me because it's not extraneous; it is directly relevant to the project. I also don't mind projects listing their preferred charities.
But I do roll my eyes when projects continue to pine on about Taiwan's independence or the genocides in Gaza. If there isn't a reason why it's actually relevant to the project, I don't think the project page is a good space to push it.