The popularisation of the concept of Central Europe stems from some people being ashamed of being from Eastern Europe and feeling inferior to Western Europe. Eastern Europe is defined by the Iron Curtain whose effects are still visible today, while Central Europe is a category created purely by selecting a region on the map without regard for political or cultural factors, just to push Eastern Europe further East and exclude some countries from it. It’s fairly arbitrary. I don’t see Eastern Europe as inferior and am not ashamed of being from a part of it, so I see no point in using an arbitrary term like Central Europe.