OMG! Really? "programmatic technology that nefarious content creators could slip past"? How much nefarious content is there? A tiny fraction!
The kid will have to set up for them in the first place. YouTube can and should remove the "medical" and "waxing" videos and 99.98% of anything objectionable will be gone.
Secondly, the kid will go to YouPorn or Liveleak if they want to see "objectionable material".
Parents need to be smarter and less selfish about parenting. Computers need to be in the living areas and not their children's bedrooms. Same with game consoles.
YouTube has been out of control with their censorship over the last 9 months already. Channel owners can no longer question our government actions or inactions publicly or they risk getting banned and all their videos taken down. At one time I thought this was the land of the free and their platform supported free speech. Google's censorship of YouTube channels has gotten completely out of hand. I have no issues with them not wanting to be a porn or a "gore" site and they have done fairly well in that regard. However, it is not their job to handle responsibilities that belong to parents in the first place.
What is to keep a child from creating a new account to get around that? Will the rest of us have to prove that we are adults and submit identification? Google already has so many tools at their disposal to know who is using their resources. I hope some other platforms will rise to offer alternatives to YouTube before it becomes another "safe space" and censors everything that could possibly hurt someone's fragile sensibilities.
I don't think Google needs to offer parental controls. They just need to step up on censoring the graphic nudity disguised as "professional tips and tricks" and let investigative channels back on to exercise their right to question everything and stop being part of the government's sedation of society lulling the masses to sleep and believing only one narrative of the news. Just tell parents to monitor their kid's activities like their supposed to. Just my 2 cents.