It isn't? Huh, you're right, a lot of the Balkans aren't, I did not know that.
I don't think anywhere in the EU really describes itself as Eastern Europe, though. That's Ukraine, Belarus, Moldova. So really just Romania, sometimes.
Literally quite a significant number of EU countries describe themselves as Eastern European, what you said is factually wrong.
At this point I am considering your replies as either trolling or interacting in bad faith.
I don't think anywhere in the EU really describes itself as Eastern Europe, though. That's Ukraine, Belarus, Moldova. So really just Romania, sometimes.