They won’t. I get brie at Trader Joe’s. They import one that is unbelievable and inexpensive. It probably also has more fat than a stick of butter. (I don’t know for sure, I refuse to read the label)
If they are eating the vegan products, they are probably going for the goat cheese selection, which is also pretty good.
Brie is 90% fat. It’s a great low-carb (high fat) food.