Earlier quoted context omitted.
Having ads targeted at children can be seen as a good thing: it trains the children in what advertising is like, about how they can be manipulated and exploited. It's good for them to get this experience while young when the stakes are low. Of course, this might also train children to be the exploiters and manipulators. Maybe their parents would think that's a good thing too, at least in the long run.
Wouldn't it be better to remove exploitation and manipulation than to subject children to it in the hopes that it somehow makes them resistant to more of it later?
I don't see how that would work.