Well, childcare is easy to measure. It's easy to see whatever it sufficient or not so it's a bad topic for politicians.

But you can “save the children” as many times as you want and there will always be another thing to save them from. And it's impossible to measure because obviously you can't go and ask children what they do on internet or what inappropriate content they found intentionally or not.

So perfect topic to work with even without conspiracy to invade grown ups privacy.