This is a serious issue and while the OP bill is obvious censorship, all parents want more easy control.
That's still a bad idea, unless we want to criminalize a whole lot of existing software. Suppose I have a Python script that parses HTML from a URL and downloads all the images it finds. Would that be illegal to distribute unless I hook into the OS-level filters? For that matter, what about Python itself?
Refuted. I am a parent. I do not want 'more easy control'.
Alright, I guess "all" is little hyperbolic. But I think the sentiment stands firm.
I also think we need to avoid censorship as much as possible, and ensure parents have more control by default is the best path forward. Otherwise we'll end up with a solution like the UK has where age registration has to be done by everyone.