Would require a whole new beaurocracy dedicated to procuring, storing, packing and shipping the food (none of which USDA or FNS do now), and then monitoring that it all goes the right places and isnt abused.
Hard to imagine govt doing any of that more efficiently and cheaply than grocery stores who already have that infrastructure and are forced to compete for the consumers dollar do, and very hard to imagine those costs being well estimated and included in the presidents budget.
Republican innovation would be to contract it out so it cost taxpayers 3x as much as the old program but funded some mini sky scraper of I 66 in northern VA.
There may be merits to delivering bulk dry peas to poor people instead of letting them buy cokes, but i would be shocked if it saved taxpayers money.