Communism is leftist, and often conservatives and some liberals will call anything left of center “communist” so it’s well within reason for the OC to be wary of your rhetoric.

Also disliking imperalism isn’t only a communist thing, and I have to wonder what kinds of posts you’re looking at that people bring up American imperialism if it’s not relevant. I’m subscribed to a lot of political communities on Lemmy and don’t see the topic of imperialism being brought up that often.