Children are totally targeted. They will ask their parents and put pressure to buy them stuff. Maybe even the parents who don't cave in can be relieved of this.
In the longer term, stuff that enters your brain as a child shapes you and lasts long. See how well how many people in their 30s remember ads of their childhood.
Why would someone defend such ads anyway? I don't believe they achieve anything good for anyone except the advertiser.
Its because I don't want the government, people who I've never met in person and honestly are not the most moral of individuals, making moral decisions for my children on my behalf.
Even if the majority of citizens agreed that forcing their morality on the minority is the right thing to do I still disagree because individual freedom is more important than majority opinion.