TBH I never really saw Brits claiming Ancient Greece like that. We didn't even study it in school. We studied Ancient Egypt, Rome, Victorians, WWI/WWII, Tudors, Norman Conquest etc.
I noticed American cacs love to talk about Rome and Ancient Greece. They create this overarching theme of ''whiteness'' which doesn't exist in Europe. It's always hilarious to see Americans of Polish descent bragging about Rome and shyt lol. Ignorance.
In reality most Europeans claim and brag about their own history.
Next time a cac talks shyt ask him what his ethnic background is and tell him to brag about Lithuania