I think part of the reason why American propaganda is so powerful is because most people only speak English as a second language. That way they are extra vulnerable for misinformation since they only get the American perspective. And since they can’t speak other foreign languages they don’t get the other perspective.
I’d say it works the other way around. English became the “universal” language due to domination of the British Empire and subsequently USA on global stage. Before that, other languages were dominating the scene.
In theory, with the decline of US hegemony, the languages spoken “universally” would change. Idk if it would be mandarin or something else