Thank you for a stimulating review.
I became interested in 'simple living' when I suffered a series of upsets in one year (I became ill, lost my job, my wife, my home & nearly became bankrupt). I suddenly found myself with very little to live on & wondered how I might live a simple. but, happy life.
It looks as if this book will be very interesting. I have purchased a copy & may review it later.
For now, I thought it might be helpful to say:
 Jesus was not vegetarian. He was Jewish & ate a Passover meal (which is lamb) with the Apostles at the Last Supper (Luke 22:8).
 Jesus healed a man & commanded him to make the offering required by the Jewish law. This suggests that he followed the Jewish laws of sacrifice. Isaiah quotes the Lord: "What makes you think I want all your sacrifices?" (Isaiah 1:11) which implies that God was fed up of sacrifices. Jesus was Himself a sacrifice (for once & for all) for sins; &, given the quote in Isaiah, you could make a case that He opposed sacrifices, but, it's not conclusive.
Still, I'm only human, maybe I've missed something.
If anyone has any better evidence perhaps they could comment here & I have requested to receive an e-mail if they do. I'm always interested in alternative points of view.