It goes back to the presentation of politics and political history as fundamentally a logic puzzle whereby you deduce the most freedom-y system in the abstract and everything descends from that. You see this all the time with the Founding Fathers where the revolution is taught as being purely about their ideals of what a just state should be and any historical context, discussions of their material interests, is brushed to the side or treated as a footnote. So it’s not just there’s an ignorance of historical context, it’s that they outright dismiss it as being important.

This is why we get “Communism 200 billion dead vuvuzela no iPhone” when it comes to nominally socialist states but when it comes to US atrocities it’s always “that’s not what we truly are, those are hiccups on the path to a more perfect union.” If they think the logic puzzle fits, then deaths don’t matter because we need to trust the process.