First mistake: you're trying to apply your usual reasoning to an area governed by emotions. Second mistake: you're glossing over the obvious. "Save to personal

First mistake: you're trying to apply your usual reasoning to an area governed by emotions. Second mistake: you're glossing over the obvious. "Save to personal playlist" tracks you by keeping a list of things you told it to save. Third mistake: you're forgetting the wider context. Google is such a juicy target, that the criteria are becoming "can an adversary convince a clueless person this deserves a jillion credits fine?" Children's data is as toxic as medical data and you don't want it anywhere near your service, unless you really really have to and both legal and privacy agree there's no remotely viable alternative. Source: I'm regularly taking the mandatory trainings in Google.