Presumably not very well, because the houses have no real foundation. But when you look at a seismic hazard map you'll see that earthquakes don't happen in large swaths of the world.
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.
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.
