I have to agree. The premise in the headline is so obviously agreeable, but the application described sounds like it would make for a terrible place to work. This isn't an article about building a supportive work environment that sets realistic expectations and fosters a mutually-supportive team environment. It's about the one-on-one meeting as the most effective tool to extract as much work as possible out of each individual worker—which obviously is quite hard in a group meeting.

Of course, a manager who does that effectively is also doing their job as a manager well. One reason I will always refuse to become a supervisor is that being a good manager (i.e. nice and reasonable to work for) and being a good manager (i.e. extracting the maximum surplus value out of each worker) are often directly in conflict, as this article shows.

ETA: In fact, I can think of a manager just like this at an employer I recently left. Individual meetings were a tool to push each of us to the limit, try to pit us against each other, &c. Employees hate this boss, but management loves them!