Outside of the other concerns people have raised, it is important to remember even if all parents are making the right choice for their kids, it isn't always (and in many cases, isn't) the parent making this decision. For example, another case where Apple has gotten outed, they were actively aware of the forced child labor by the schools: https://www.channelnews.com.au/apple-admits-to-using-child-l...
And if you believe the children, they also weren't really being paid and had no choice to participate in these "internships".