I don't know if I can agree with this. Child labor has been blown way out of proportion. How do you think the world worked just a few hundred years ago? Not everyone was going to school and having a carefree life. Kids would apprentice with their parents at very young ages so that they could one day take over the family business.
It's only in recent history that the general population has had the LUXURY of spoiling their children in the way you describe. When times are tough, sometimes everyone needs to pitch in.
These kids are learning. They're just not learning the largely useless information that most people learn in traditional schools. They're definitely learning what they need to learn to survive where they live.
Yes, it's sad that we can't all live like people in first world countries but it's also sad that anyone has to work at and that all of our needs aren't taken care of for us from birth till death.
Kids are a lot tougher than most people think. They don't have to be coddled. That's just something that overconcerned parents made popular.