I'm trying to discourage you from making baseless accusations against other users. those accusations can be phrased "this is what propagandists do" or similar. that's a total cop out.

if someone is spreading misinformation, most communities and instances have a rule against that; report it. if someone is saying something that is true and happens to align with known propaganda, the situation gets very sticky. if you feel you must refute something unsaid, I strongly recommend that you clarify, before and afte, that you are not making some accusation against the particular user.

personally, I would simply nuance their oblique fact to try to reframe it in a way that doesn't benefit the (suspected) propaganda message, or leave it alone.

accusations of shilling are fucking toxic to the community. it requires a high level of proof.