I'm a bit anti-Nintendo at the moment for the terrible and downright crappy things they're doing.
That being said, I'm not "angry" at this feature. It sounds like Xbox Live and PSN network ruling too. What I am angry is that they do this AT ALL. Just because they promise it's "for the good of children", doesn't mean Nintendo won't use it for other reasons. Remember the saying, "Give an inch, take a mile". Don't give Nintendo the inch on this. If they're concerned about children and teens... maybe they should I don't know... disable chat unless enabled by a parent account? That way, parents are fully aware of it.
And since when is it up to companies to parent children? that's what PARENTS are for... I swear technology has made people too comfortable leaving children be without supervision. Just give them a tablet and shut them up, right?
Edit: And yeah, I did read the article. Many privacy invading things start as "think of the kids".