Veggie foods need more energy to be digested so the net calories are lower than the intake even being negative for some. Livestock is fed 80% of the global soy production, rainforests are burnt to plant soy for that purpose, meat production releases methane and its manure lagoons leech into groundwater and end up in the sea, 82% of the antibiotics produced are administered to livestock, many are feed food waste including wrapping (this is allowed) so it’s not surprising than more than 73% of the analyzed meat and dairy products contain microplastics. As of 2014 there was about 23 billion chickens and 1.5 billion cattle around the world to give you some perspective there’s less than 8 billion people in the world. So we need to be more objective on where is the real ecological disaster.