I think there should be a scheme to provide meals for children in the holidays. Children should not have to be hungry or, as others have said be 'punished' for lack of money.
However, if parents are wilfully neglecting children then those parents should be punished-maybe by not being given ready cash but rather food and clothing vouchers for a period and supervision, a little along the lines of probation.
if those vouchers are then found to have been sold, then they have proved that they are not fit to have care of children and yes, the children should be taken away. The shop keeper who is taking the vouchers for things that they are not intended for should be prosecuted and, ideally, be given a custodial sentence.
In the case of parents who are neglectful because they know no better, then they should be treated gently but the bottom line is the child's welfare and if they cannot look after that child, then action need s to be taken.
A child who is hungry all the time is the bottom line and I would be surprised if the child's stomach could distinguish that it is hungry because their parent is inadequate, has sen or is cheating their child by spending money on non-essentials.
There may not be enough resources to deal with it at the moment but there would be no harm in establishing the principle.
However, yes, I think that until this issue is addressed, there should be some form of fsm in the holidays.