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.
No one has the time to pay attention to every little injustice in the world. For all the people crying about Gaza, how many of them are dedicating as much energy to the wars in Sudan, Yemen, or Myanmar, or the abuses by Russian security services (like imprisoning a guy for holding up a blank card)? This isn't to say that we should just ignore Gaza or Ukraine or ICE in the US, but we need to make a choice: either we spend ALL our energy addressing every injustice in the world, until there is no more injustice left (and this means we need to stop everything else we're doing now, including keeping society running, making food, etc.), or we need to choose when and how much attention we'll devote to various issues.