The governments won't protect them either. The governments are the ones enabling these corporations to exist and facilitate harm towards children. Maybe they shouldn't be allowed to have those corporations.
And then the moment the government does do something, "it's a totalitarian power grab!!!111"
They are doing something which is not a solution but can fake being a solution, so that the masses will accept it. An actual solution would be to regulate these social media, to prohibit addictive and manipulative algorithms.
Maybe OS vendors should stop trying to sell ads and instead fix their operating systems so that parents can responsibly monitor their children's online activity in a way that promotes both parental responsibility, and children's human rights ... but of course, that would require OS vendors to stop selling ads.
Nothing could possibly go wrong with eugenics
The Idiocracy scenario we've stepped into isn't much better...
It is. It's far from good, but it's much better than eugenics.
Note that we do have a system of eugenics, which we call money.
How so? Birth rate isn't positively correlated with wealth.
It can, but we’re quite good at it with all animals and plants..
If you mean that we can breed subservient cripples then sure.