Even by the claims of your article, it doesn't sound really like it was his fault. The system was designed to a specification, whether or not the architect was given too much free reign is entirely on the board.
If you hire a design team to create a car with a massive hole where the engine and wheels should be, because it is more "clean", and then neglect to hire an engineer to check their work is feasible, is it on the design team or on you being incompetent?
You can say all you want "hot air naturally rises", true, but I doubt an architect has the training to be a safety engineer, and before you say "oh well that's obvious", consider that heavy objects naturally fall to the earth, and yet we have airplanes.
They had a design which would work, but nobody in charge actually did the legwork of bothering to check if it was feasible or not, and/or bungled it so badly even if it were feasible it was like attaching a helicopter to an airplane and then wondering why it didn't fly...