Like the author of the article, I've been making the switch to programming by voice. At first, the delay was really jarring, but you get used to it.

You're also completely correct about how when you speak a chain of commands, one of the commands in the middle getting messed up can invalidate the rest. That happens a lot. You learn to speak in shorter chains, and also to make the commands phonetically distinct.

That said, both the delay and the inaccuracy problems can be greatly ameliorated by a fast CPU and a good sound card. I don't have any benchmarks, but I have noticed the difference since upgrading.