These are all the same parents who post up pictures of their kids on facebook from the instant they're born no doubt.
I was surprised that people on here post very personal stuff about their children and other family but that is nothing like keeping an eye on your kids. And that's what we're talking about here. Keeping an eye on them not spying on them. Have you any idea of the kind of dribble kids text each other? You couldn't spy on them without going nuts. It's simply checking they're not in any danger, no different to keeping them within sight when out for a walk when they're little.