This has got very little to do with children - that is just the excuse that sounds good. "Think of the children" is a rhetorical tactic that anyone who wants to get unfettered access to your data rolls out whenever they can. It is a tactic that unreasonable people use to influence reasonable people, because it is so difficult for a reasonable person to argue against without coming across as uncaring and/or bigoted.

If it was an excuse to get your data there would be some data-getting involved. It may be hard for you to believe, but lots of people really do want parental controls that actually work and are bound by the force of law.