I'm not sure what to think of this blog post. Do anyone really recognize himself or herself in the described developers? It's not even about Mac OS X vs GNU/Linux, I'm not using any desktop environment on my computers (no Gnome, KDE, XFCE, …), my graphical environment is composed of a minimal windows manager and a small taskbar. I don't need anything else. I just checked and I don't even have a graphical file browser…
What is that 'minimal windows manager' and what is the benefit of it over Unity (which to me is a few icons down the left and a few icons + notifications in the top right)?
Speaking for Openbox (since it is what I use) the benefits are numerous: less lost space on screen (UI is customizable to the pixel simply by editing an XML file); extensive and customizable keyboard controls (again, just by editing a simple XML file) for managing windows (resizing, positioning, etc.) but also for launching applications and managing multimedia keys for instance; more lightweight in term of resources (not that important, but always nice); and being compliant with ICCCM and EWMH standards which allows extensive external scripting using tools like wmctrl.