The comment section seems to be divided between "don't police your children" and "absolutely police everything your children do".

Parental controls are absolutely necessary, yet they won't be enough by themselves. Payment systems are really robust but there's still fraud. If there's prey, there will be predators.

Education and clear rules are absolutely necessary, yet they won't be enough by themselves. There's people that's very evil and also very clever. You can educate and trust your 12yo to understand 80% of it, yet for the remaining 20% you have to be there.

And, oh boy, the issue about parental controls being incredibly complicated is 100% by design. Simple and sensible parental controls would make exploitative business models like Roblox go bankrupt overnight.