The Climate Crisis

Irrelevant aside:

Removing livestock would free up a significant amount of crop growing land (where crops are currently grown for livestock consumption,) which would first be repurposed for human consumption.

"Human consumption" here couldn't mean eating. There is no way we could eat all the food we currently grow for ourselves, plus all the food we grow for livestock. Meat obviously consumes many times the calories it produces. The surplus plants could be used for energy generation (low tech solar), pharm, industrial products, etc.