Comment by kajumix
Your suggestion basically amounts to: digitize and centralize welfare. There are already electronic cards for food. If the money is drawn directly from the central bank as credit instead of from the state welfare fund, it won't make it any more efficient. In fact any experimentation among states will disappear. Also, if CBDCs become a thing, you could see a slow slide into behavior control. What people eat, and where they live becomes a concern for the central bank, because they get to decide who the approved vendors are for those things. "Central" anything is a design smell in most cases.
Getting rid of cash also requires proper paper work and identification so you can sign up for the CBDC wallet. In that case you're excluding the very people from the system who need it the most.
I never said get rid of cash, CBDCs and cash can coexist.
Also it would make welfare more efficient, as you can garnish earnings from citizens to repay back the debt, whereas now it's just a gift.