Quote 22
These mothers, instead of being able to work for their honest livelihood, are forced to employ all their time in strolling to beg for sustenance for their helpless infants, who, as they grow up, either turn thieves for want of work, or leave their dear native country to fight for the Pretender in Spain, or sell themselves to the Barbados. (1)
It's clear that the moms are all about helping their kids survive. The narrator will later insinuate that caring about children is a privilege only awarded to the upper classes.
Quote 23
But my intention is very far from being confined to provide only for the children of professed beggars; it is of a much greater extent, and shall take in the whole number of infants at a certain age who are born of parents in effect as little able to support them as those who demand our charity in the streets. (3)
There's a fuzzy line separating the children of beggars and the children of poor Irish citizens. In other words, it was pretty common to be poor in Ireland.
Quote 24
'Tis true, a child just dropped from its dam may be supported by her milk for a solar year with little other nourishment, at most not above the value of two shillings. (4)
Notice how Swift is comparing a human child to a baby animal. He's buttering up his readers for the big proposal.