Considering they are in a literal desert, they would have to be fairly sustainable to exist in the first place. Not saying it's not super impressive, my dad lived out there when they were building up a lot of the expanded infrastructure and he has some cool stories about how he saw the desert on the outskirts disappear as they added in all the water and transportation stuff
How are some people so ignorant to all the terrible things he's done? No one ever fact checks on anything and it's seriously depressing