This forum is about treating acne scars, not a place to espouse one's world / political views on "immorality of eating meat." Saying acne scars is treatable by diet is ridiculous and insulting to those who suffer from bad scarring. It blames the victim, and perpetuates the idea that people who suffer from acne / scars are lazy, unhealthy, unclean, and inferior. No amount of eating vegetables or rubbing lemon juice will do jack for scars.
Would eating a healthy diet help in the healing process AFTER a procedure? Sure, but on it's own will do jack for scars.