This is likely another gaslighting technique he uses against her. He has a two-year art degree and she as far as I know has only secondary school education. He also earned the money, which he also subtly mentioned, so she was and is essentially a JW wife to him. Stay home, prepare dinner, clean the house, take care of the children and STFU.
He claims he has a degree, and being an art student is not exactly brain-taxing.
Let's not get into the whole education game here. There are some that say that one goes to school to be dumbed down and will therefore conform to society's norms more easily. I.E. follow government dictates no matter how absurd they are.
Dijana on the other hand would have had to learn survival skills from an early age. Lloyd is a product of Western society, Dijana is a product of poverty. Lloyd would have absolutely no idea how to survive if his begging bowl dried up.
Education will never teach you survival skills. At least today's education would not since they took Home Economics out off the curriculum.