Chopping down Joshua trees is a bit absurd. I live in the mohave desert, there are PLENTY of barren areas to do it, you almost have to be looking for the ancient Joshua trees to decide to do that. And as far as I know they are protected in most places, especially the California side.
But I will say the article seems a bit ragebaity. "To power wealthy people's homes". Unless they are super isolated somehow, that power is going into the grid, just like every other means of electricity production. The dude that wrote the article will be using it to charge his laptop when it's done, just like the rest of us.