It was short because this article doesn't explain quantum computers. A better title is "Why we can make smaller transistors?" Quantum computers don't use transistors.

And quantum computers are not about understanding The Wave or hacking the word simulator. Another commenter post this link, that is a good initial introduction http://www.smbc-comics.com/comic/the-talk-3

(Anyway, to really understand what is quantum mechanics and quantum computers, you need a lot of algebra. Don't trust explanations without algebra.)