I’m fine with people having lots of kids, even if they know they’ll rely sometimes on public assistance, as long as they plan to work a reasonable amount. Some people work but their jobs just don’t pay that much. That doesn’t mean they don’t deserve to have as many kids as they can physically and psychologically handle. If they have no income and no plan to have an income, that’s another story.
What really bothers me, though, is the widespread custom in Israel among charedim that the couple’s family not only pay for the wedding, but actually *buy an apartment* for the couple! I’ve heard this really drives many parents into desperation, reducing them to shnorring door to door in America, and putting them under unbearable strain. Yet there’s no halachic other good reason for this custom! Let your kids rent; it’s not the end of the world.