Hacham
They restrict it to certain brands because those manafacturers pay the State to do that. i.e. Kellog’s only but no General Mills.
You are partially correct. I receive WIC checks for my daughter’s formula, and when I got them I asked for Similac- the provider told me that every 5 years all the major brands bid to give the state the best price on baby foods, formula etc. (regarding formula, it is currently Enfamil) I don’t know the system regarding regular food checks, but I’m assuming it is something similar.