"To muse, to creep, to halt at will, to gaze ... such sweet wayfaring" William Wordsworth
I had no idea but it makes sense.
But is it economically sustainable. Sure, they can grow it, and maybe even sell it, but what about the economic costs?
The water is a resource to be used. It is a matter of it being shared in a sensible way between all irrigators and the environmental needs. We need the food and citrus is good food. I am not sure it it is a particularly water hungry crop that should be avoided for that reason.