Edit: actually no, this feature wasn’t useless overall. It was useless for age verification, but great for parental control. The moment a kid doesn’t have root access to the computer, a parent can put whatever age to block the kid from whatever features the parent wants to block them from. Think about it, self enforcing age verification doesn’t give power to governments, it gives it to the root user of the computer, aka parents. It’s something that actually works.
That's absolutely a valid use case. But I just use timekpr-next on my kids' non-root accounts and that solves it.