I understand your point, but foodbanks are a symptom. Labour wouldn't have foodbank policies: "More Foodbanks!", "Better Foodbanks now!" or even "No More Foodbanks!".
People who use them know why they exist- it's because they have no money left after paying their their heating, or their rent, or they're underpaid - and they want to hear how their wages will go up, or their heating bills will go down etc.
The leader of a party has to be the one giving out the inspiring, positive message, and that's telling people what they're going to do to make a society which won't need foodbanks.