@denspier then let me ask you. Is Poland Central Europe or Eastern Europe?
From a Russian standpoint it's Eastern Europe and it isn't entirely incorrect to think so for historical reasons.
From the Polish and the EU perspectives it's Central Europe.
Understand that I'm being provocative to mark my point.
We choose to side with geography and cultural affinity in that case.
Why is it different for the UK? No one dares to think Iceland isn't in Europe and there would be enough reasons to do so.