I don't think so, from my peer group I don't see this bias. It really is a difference of opinion. Now you can say half the country is brain washed by propaganda, but those people would say the same of you.

In reality it's only the terminally online that seem to create these narratives.

My point isn't to pick one side or the other, but agreeing with the other poster that the LLMs are not trained specifically to parrot administration propaganda.