What the article describes won't work in most houses as it's designed around a thermal chimney. It doesn't work with high temperatures, even at only 85 degrees it's 78 inside. They note that building is effectively unusable during heat waves and the hottest part of the day. And the article ends by noting that the problems are continuing to get worse as the temperatures increase.

AC cooling has massive advantages, there are solid reasons why every building should have heat pumps. Doing some of these techniques can reduce the load on HVAC systems, but eliminating them entirely is a bit silly.