I think it's hard for people in other countries to realize how deeply propagandized Americans have been for their entire lives. They are relentlessly taught that the USA is the greatest country and the only place anyone in their right mind would want to live, and that the USA brings freedom to the world, even as they suffer bad working conditions, crappy housing, a violent society and poor education and healthcare. They believe they are the only country with true freedom, even as they're allowed to embrace a range of political views all the way from neoliberalism to fascism, murdered by brutal armed police, and imprisoned at the highest rate in the world.

So some of these will be so steeped in the propaganda that they genuinely believe US invasions are doing other countries a favour.