I have a concern that is not directly addressing this article but is related to. I think it the amount of animal-based product you consume also matter. As an ovolactovegetarian, I realized that the amount of dairy products that I consume has increased in comparison to when I was eating meat. Eventually eating just a bit of high-quality meat would lead to far less consumption of dairy products and is better off. It would be interesting to have some quantitative statement about this.