Identifying demographics and targeting the marketing to them is the bread and butter of modern advertising. The entire justification for Google's and Facebook's mass consumer surveillance is to offer corporations more targeted advertising.
There are gray areas but if you're marketing to children, you know you're marketing to children.
That’s all well and good but despite your indignation you haven’t actually explained what it means to market to children. Maybe I accept your premise that marketeers know how to single out specific demographics, but I don’t work in marketing so I have no idea what separates “marketing at children” versus just marketing in general.
Identifying demographics and targeting the marketing to them is the bread and butter of modern advertising. The entire justification for Google's and Facebook's mass consumer surveillance is to offer corporations more targeted advertising.
There are gray areas but if you're marketing to children, you know you're marketing to children.