Perhaps I am just old fashioned. The way I understand a computer case seems to be radically defied by what cases like this one represents. Air flow and pressure is one aspect that is generally ignored here, the article suggests that it being open increases air flow, but I see the opposite happening in this situation. But next to that, there is a complete disregard for the safety of the hardware itself. it makes you wonder why they bother with a case at all.
If the case being open doesn't matter, you may as well just set the motherboard upon a piece of wood. There is a reason why grounding a pc case is important and why computers in an acrylic or sitting with plastic standoffs have a higher rate of failure.