There's surveillance (parental supervision) and then there's "surveillance" (corporate psycos / overbearing governments).
You want your kids to learn independence in a gradual and some what safe / controlled way (not too safe of course). There are still some things I don't want them exposed to at age 10. Unfortunately unsupervised internet isn't the best option here. Outsourcing it to tech is a really bad choice for sure. You need to be present as a parent to help them navigate and answer questions. If you aren't, then some youtuber (or worse) will do it for you. There's also an argument that being present as a parent has become harder than ever on average for economic reasons (double income, wage stagnation, inflation, etc.), and also the problem that many parents have no clue how to navigate the internet responsibly themselves.
Does posting this vague (pithy?) comment result in a reduction of horrific things occurring?
There's definitely things on the internet parents don't want them to access - this is normal, we don't want them going on there.
This 'surveillance' can be problematic but it's not 'dystopian'.
The 'dystopian surveillance' is for the more serious issues, people getting flagged for this or that etc..
'Age appropriate content' is fine, but nuanced.
'Surveilling everyone' is bad.
You also don't want moral busybodies at school make mountains out of molehills to make it more traumatic than the content they perhaps consumed and wasn't age appropriate. A while ago parents were oblivious to what content their children consume and didn't even have blocks. The children survived too although a bit more engagement might indeed be sensible.
As I said, it was criticism of surveillance, not blocking content or in general curating content for very young children.
Whoever implemented the surveillance of children should burn in hell. Since that probably doesn't exist the next prison with strong similarities should be chosen. You teach them that this kind of 24/7 surveillance is normal and I think they have enough problems with peer pressure through social media. You also teach a zero trust behavior. That can be good in a context and it can be really bad if it becomes learned cynicism.
I could understand it until age 10 perhaps but at some point you want your kids to be independent. If they aren't bots by that age.