What exactly is the useful part, though? I mean, it's technically wrong. I don't see how this description improves layman understanding of cookies, much less to the point of offsetting the wrongness of it. In fact, you could argue "text files" is straight up confusing: you'd expect them to be human-readable, but they're not. They're machine-oriented data, often with several layers of encoding and serialization.
The article was right at the time of writing, and it's even righter today.
The article was right at the time of writing, and it's even righter today.