I'm really interested to know what specifically you're concerned about. This article is just inaccurate. You can opt out of usage data, so what is the privacy issue for you personally?
What's described in the article is just one example of how depending on a closed system like the Sonos can burn me further down the line. The setup I've described takes advantage of the HDMI standard to not depend on any specific vendor and even fixes the 70ms Sonos line-in delay. Since I've even priced it out at slightly cheaper than the Sonos with probably better speakers (2x JBL LSR 305 vs the Play1's) I think the only advantage the Sonos retains for me is really the better industrial design.