The secret is "be in a reasonably dry climate" - this video is about construction in Africa, after all.

There are adobe structures dating all the way back to 500 BC [1] - if you've got the climate of Iran or Yemen or New Mexico it holds up adequately, especially if you only need a single storey.

[1] https://en.wikipedia.org/wiki/Adobe

A lack of rain resistance won't kill you suddenly. If mud brick or cave technology were so amazing, we'd all be living that way still. A better way would be to build structurally-sound, partially underground to moderate seasonal temperatures, against wind, hail, and forest fires, and placed to prevent floods.