I can't speak for people broadly, but if I compare to how I was before I had the views I have now? Honestly, a lot of it is pure erasure. The alternative never even gets seen. It wasn't like for much of my life, I was presented with two views with equal airtime, rabid imperialism/colonialism and anti-imperialist communism, and I had to choose which one made more sense. It was more like I was largely presented with one view, which was some amalgamation of western supremacy, white supremacy, and binary good/evil view of the world, where the west was honorable and doing its best against the barbarian hordes of bad ideologies. I didn't necessarily have it presented in those explicit terms because that would sound too blatantly racist for liberalism's sanitizing delivery of a worldview, but that's probably how I'd put it looking back on it now.