He built underground maze of light-filled earth homes in CA Sierras [video] 8 months ago
They do discuss permits at ~5:50
HN user
They do discuss permits at ~5:50
The issue is that they need fresh water for evaporative cooling.
Much of the world experiences fresh water scarcity, so it's not the best ethics to divert this resource from people in need to tech of uncertain value.
Check out the impact xAI is having on environment and health in Memphis if you want to go further down the rabbit hole.