This is not uncommon unfortunately. It’s actually gotten significantly worse in the last 5 years or so, like 15 years ago it was just taken as fact by literally everybody that pretty much everything in the cold war was bullshit. But with the rising anti-russia sentiment and obviously the war it’s like literally everything from that period is now just taken as fact. It’s wild. Even the extremely easy to disprove stuff like this.
EDIT: I feel like this user is a bot given how it’s gone and responded so many times below and then mixed up the conversations elsewhere.
I think the nationalist brainworms of americans do most of the heavy lifting, combined with the fact liberals are completely without principles. It’s not dissimilar to how they’ll happily use homophobia to attack Republicans or whoever the current international villain is simply because “they’re bad so it’s ok”. This same lack of principles applies to history too, which they will rewrite to suit their nationalist goals at any time with no principles or scruples. The core issue is nationalism. Anyone you can deprogram and change into an internationalist stops all of this.