Czechs and Slovaks get offended when they're called Eastern European but not when they're called Western European. Is that because they look down on real Eastern Europeans and worship Western Europeans?

捷克人和斯洛伐克人会因被称为东欧人而不是西欧人而感到冒犯。是因为他们看不起东欧人而崇拜西欧人吗?