The idea that a kid gets an expensive device that can't buy by itself and the parents have control or what device the kid gets is a very middle-class assumption. Life isn't that perfect for most people.
Let's use another analog: Kids want sweets and parents either agree to buy that and no longer bother with their diet, or saves money to go to the candy store. Yet if a kid gets too unhealthy we (IMO, rightfully) have CPS sent to their house to investigate their home life.
Kids were never meant to be a convenience. And parents talked about here aren't rich enough to delegate their parenting off to someone else. Take a few hours to research what you give to your kid and monitor what they might get outside of your vision.
There's plenty of overworked, stressed or ignorant parents who really wish they could care or they don't at all.
"should have enough digital literacy" doesn't survive reality check - reportedly 12-26% adults in the UK (% depending on the country) is reported to have very poor/lack of basic literacy skills. 25% approximately are functionally illiterate.
Reportedly (I'm not an American), 36 million of US adults are functionally illiterate; 43% cannot read a simple job application; 41% of low-income households lack digital literacy skills.
Those are only two prominent examples. More developed countries (especially in Europe) will fare better, many countries will fare much worse.
I think your heart is in the right place but the reality stays in disagreement.
The sad fact is many kids are already falling under the cracks. Failing to mind their kids internet usage is just one way, and having companies sneak in to try and fix this patch won't suddenly lead to success.
The needle won't be moved in terms of progress, but privacy will take a near fatal blow. I fail to see why we should accept such measures when this is just yet another bald face power grab by greedy corporations. I might have been more accommodating if this was in good faith, but we've been past the BOTD for at least 7 years now.