okay I accept 4 Vedas and 12 Upanishads connected to the 4....the ones which are actually Ved"anta" (the ones which close thew Vedas) ...Now Brihadarayanka 6.4 is not refuted in any of those 16 texts ...coup de grace
There are more than 200 Upanishads. There are 14 important Upanishads.
All of which translate the Vedas and are Vedanta. There is nothing in Brihadarayanka which needs to be "refuted".
Especially since it says Ksheerodanam, Dadhyodanam, Tiladanam and Mashodanam. Milk with rice, Curd with rice, Til with rice and Legume with rice.