They use cinderblocks instead of concrete blocks because of the weight. Foundation structure gets harder with solid or hollow concrete blocks. Cinder blocks require sealing also, as do hollow concrete blocks.
Now stabilized adobe is a good building material in a dry climate. 3’-4’ thick walls work well for that.
"Autoclaved aerated concrete (AAC), also known as autoclaved cellular concrete (ACC), autoclaved lightweight concrete (ALC), autoclaved concrete, cellular concrete, porous concrete, Aircrete, Hebel Block, and Ytong is a lightweight, precast, Foam concrete building material invented in the mid-1920s that simultaneously provides structure, insulation, and fire-and mold-resistance."
Wiki-- In my humble opinion, this is the perfect building matiral.. :)