I'm with you in that I would totally disagree with her on that point. Lawns down here may need to be coddled when being established, sure. But I don't do anything to my zoysia except mow it, and it is NOT overtaken by weeds, etc. I think it depends on what grass you choose for your lawn.
I disagree with monoculture lawns in principle, and thought the article was intriguing.