I am not sure how you interpreted it to mean "let's focus on diets". If somebody points out a problem it doesn't mean it's the problem. As far as I am aware no

I am not sure how you interpreted it to mean "let's focus on diets". If somebody points out a problem it doesn't mean it's the problem. As far as I am aware no serious policy says let's focus on X. There is no one single low hanging fruit in climate problem. It would require big changes across the board (land use included).