Maybe we could just limit the temps in other hot areas to the same as Hawaii which gets around 85° and rarely goes over 90°?
How about other parts or the US where temps regularly exceed 100° or even 110°? Those airflow designs would do little more than pipe summer heat through their homes.
You can design homes in hot areas to do well, but it’s not an airflow issue. You can do earth berms, thicker walls, much better insulation, and design windows and eaves to prevent the high summer sun from coming in windows to heat the interior. Unfortunately a lot of these kinds of efficient building styles are seen as crunchy-granola and don’t lend themselves to mass produced, cheap material, suburban tract homes and McMansions. The problem is crappy construction and our insistence on the prevalent suburban style.