No.

That is a separate and still valid point. Even if you are visiting a food bank, you still have all your same allergies, sensitivities, and preferences. The food bank itself will have a better idea of what they need to hand out.

I’m saying that even if the food bank needs 20 cans of cranberry sauce, instead of you buying for $$$ and donating them, it is better for you to donate $$$. The food bank can then buy the cranberry sauce for $$, and also buy some green beans for the leftover $. Your dollars buy more of everything when you give them to the food bank instead of buying the products yourself.