Is there a reason not to tweak it slightly so that companies have to assume, unless proven otherwise, that users are children? That way it'll default for everyo

Is there a reason not to tweak it slightly so that companies have to assume, unless proven otherwise, that users are children? That way it'll default for everyone here to the "privacy enhanced standards" for lack of a better term and those who want to opt out can be the ones to hand over their identity to the companies?