I reckon you are not thinking straight.
After the father has abandoned and the mother decides to keep her child without income she must leave her child with a guardian, go to work in the city but the minimum wage of around 12000 month is not enough to pay for accommodation, guardian, food, clothing, electricity, etc, now she finds herself working in the sex industry.
Please do the maths, a 12k baht monthly income from a job at Big C won't make ends meet.
We are back in this horrible circle.
I think you're both correct. There is an element of needing the money and also an element of wanting the money. Some would still be on the game even if they got some money from the government, while some would probably not.
It seems to be down to a matter of opinion, which of course people often disagree on.