No-one made any such argument, those are your words.
A company proposes a solution to an existing problem, everyone runs to the hills and screams loss of privacy. None of you (people against it) as Adults can do everything or have the power to protect your kids yourselves, yet your'e all outraged when a company offering solutions that require services you already have enabled. Ironically, then you'd probably blame (or in the the USA, sue) the company because you did what iCloud on to protect your kids...
You're already submitted to accepting iCloud, it needs to be on to use Apple Pay, to use AirDrop, to save passwords to Keychains etc.
In the 80's TV had Charlie the cat child safety awareness programmes, such as 'charley said, always tell your mummy before you go off somewhere'. You think parents stop their kids watching because they thought the big baddie TV companies were trying to control them???
lol settle down