Not much to recommend that article - reads as if it was written just to have a point of difference and attract a few more clicks. Which is important in the blogosphere of course.
Attendants are expected by the majority of the demographic using the lounge and QR would be a laughing stock if they didn't have them. Primarily to keep things clean and tidy, flushed and mopped/scrubbed.
Personally what I am looking for in a lounge is to get away from the airport rush. Most of us spend enough time on planes that we don't need to see them from the lounge window as well.