Normally I don't like non historical movies that pinpoint any specific country as antagonists, but everything I've seen in the past 2 decade have told me that the most unrealistic thing about Wandering Earth isn't blowing up the moon or pushing the earth around, it's the US unironically being part of the "United Earth Government" , the chance of the US electing a Evangelical doomsday cultist, deliberately accelerating the apocalypse while sabotaging all efforts to save the Earth is far more believable than it contributing anything to a "World Government". The very idea of a world government would probably cause mass hysteria in the US and the reason why Evangelical doomsday cult would become popular in the first place.
Also, let's not say the "West" here, people like to say the "West" is this and that, but no, United States are those things, the rest is just kinda there through association but without any of the actual strength of the United States.
Come to think of, I'm going to watch Wandering Earth 2 a second time, the movie is quite packed and there's probably quite a few things I missed. But honestly, I find the cheery "Everyone cooperate to save the Earth" moments hard to sit through at times. It's like watching any fictional media involving natives and the European colonists, no matter what kind of cheerful, hopeful endings/message it has, it will never override the sense of unease/cynicism because you know that the reality could not be further from it.