Re: ISP parental Control?
"Optional opt-in" - I think you missed the point of the article. This isn't people opting in to parental controls. This setting has been turned on by default and people have no idea until things like this.
I came across this very issue last week when someone reported not being able to reach eBay on multiple browsers - a quick check in developer tools revealed some files failing to download, and ironically, I only discovered it was down to parental controls when I googled the ebaystatic page to bring up links to people talking about the issue, to show that other people were having the same problem, that's when it popped up with Virgin Media's parental control block stopping google search results.
The person in question didn't have kids, and had no interest in parental controls. How many others have this underhand state thrust upon them without their knowledge - not even a courtesy email or letter to inform them.