I think this is one of the better posts on this thread but I take issue with two things. First, I think it's hilarious that you think northern californians live in harmony with nature. I would say the nature harmony declines as you go north, terminating in the "state of jefferson" region where all they want is to clear cut every single tree. Secondly, because of the almond rush there are comparatively few 30-year-old almond orchards, and those that do exist are in the wetter orchard regions like Butte or Glenn county, while the recently planted orchards (which constitute the majority of them) are in the San Joaquin valley.
Taking the city of San Francisco and comparing it to the city of Los Angeles, I think that SF has a considerably stronger environmental movement, so the statement was not complete nonsense. It may not reflect the whole of Northern California.
As to the orchards: I pulled "30 years" out of thin air; I have no particular attachment to that number. My point was that the orchard loses considerably more than this year's crop.