Well, if they folks getting it now starved to death, poverty would by default go down.
But presumably a majority of adults could find some sort of work, or at least re-allocate their $$$ back to food. Kids of course, and seniors if they get it, would be the most vulnerable. My kids go to a school that gives EVERYONE free breakfast/lunch, I forget how that is funded but I don't know if that's something that would be accounted for in the programs we are discussing (it was a program started under covid anyway). There are state and charity organizations that could also fill the gap.
If generational welfare didn't exist, then folks simply couldn't survive if that's what they required. Presumably the incentive to have as many kids as possible to boost assistance would go away. Maybe folks would make better decisions about who they partner with. Obviously turning to crime would be a choice, probably an attractive, albeit shortsighted, one. Or those folks could go where they would have better economic opportunities, as we have seen across the globe. If a pakistani can find his way to america and learn to drive an uber, surely an american can get to peru and do the same.
I can already see you shaking your head at the VERY NOTION of an american leaving america to work anywhere else outside of a professional position, as if being poor in America is fundamentally better than working a menial job in any other country. I agree with you, America is awesome, but it shouldn't be a free ride.