They aren’t real snobs because they don’t look down on you, it is in most cases not about you personally. They just think their culture is superior which sounds very arrogant but below that is just plain old narcasism. Also historically they’re are from ‘the cultured part of europe’ and had to deal with the basic lowlife from England (have you eaten their food?), the Dutch (have you seen their clothes?) and the Germans (have you seen what their homes). It’s like how the Romans looked at the Germanic tribes they just like superficial stuff like pretty food on pretty tables wearing pretty dresses. There are plenty of places people will treat you much worse and above all this is just a stereotype which is true on the one hand but there are a lot of different people living in France just like in any other country. Also they have crêpes.