Burgundy:
it's etymological elitism
It certainly is! An interesting example is seen in the words for certain domestic animals, and their cooked versions.
'Pig' and 'cow' are derived from Old English, but 'pork' and 'beef' from French (spoken by the elite in England from 1066 thru c. 1350)
I've always been taken with the image of two English families circa 1150, one of the elite, the other lowly. Elite man of the house returns home.
"What's for dinner, wife of mine?"
"Ask the servants."
"I'm asking you."
"Pork chops."
"Hmmm. Delicious."
Lowly man of the house returns home.
"What we eating, woman?"
"Pig."
"Yeah! I love pig."
Or something like that. I suppose the elite had time to sit around thinking up different words for the cooked versions (deer or venison anyone? Sheep or mutton?).