I think there’s a lot of judgement and a lack of knowledge on this thread. Poverty is not just a lack of money, it can be a lack of education, of opportunities, control from partners and many more. If you have been bought up in a dysfunctional family where it was the norm to go hungry, not to even attend school, then how are you going to learn to cook, shop and to budget? The cycle goes on.
In the past a lot of close knit communities picked up the slack, I remember my Mother inviting people who went to our church round for supper who she knew struggled with the intellectual challenge of budgeting and cooking. A sizeable parcel of ‘leftovers’ would go home with them. I doubt that happens these days but the same type of dysfunctional families are still with us but it becomes more visible when there isn’t the quiet, non-judgmental help from people such as my Mother and many others like her.
Obviously there are some who could, but don’t want to or can’t be bothered, to cook proper meals but in my experience working amongst the more unfortunate members of society, it is less common than it might appear.