That’s bullshit. The USA kills innocent people, but I wouldn’t ever say all Americans are not welcome. I wouldn’t even say all Russians aren’t welcome. Many people oppose their government and yet can’t do anything about what it does.
Because every Israeli voted for the government they now have? It’s stupid to exclude a whole nationality of people from traveling because of their government.
It’s all about familiarity. People feel comfortable with Windows because they always used it and it has all the programs they always used. Most people just want to get their shit done and don’t care about operating systems at all.