I thought the exact same thing, but by the dates on the comments, it looks like this article was written 7 years ago. I don't recall when I started using these

I thought the exact same thing, but by the dates on the comments, it looks like this article was written 7 years ago. I don't recall when I started using these features, but it might have been more recent than that, so I would say the omission is excusable.