There is !carnivore@lemm.ee called Friendly Carnivore
It is against the rules there to ridicule other diets.
The main mod of friendly carnivore also runs !metabolic_health@lemm.ee which is about research on metabolic syndrome (high blood pressure, obesity, abnormal cholesterol, heart disease)
Lemmy.World closed both their vegan and carnivore communities for being abusive
If you want to capture the most of the carbon, you cook the wood in an oxygen free environment turning it to charcoal and liberating volatile components (which could be used as carbon neutral fuel to run the furnaces)
Nothing can eat charcoal, so it could be stored cheaply