OP's idea is batshit, but worth noting that a doubling of the cattle population doesn't necessitate a doubling of emissions. Actually, your second link kinda go

OP's idea is batshit, but worth noting that a doubling of the cattle population doesn't necessitate a doubling of emissions. Actually, your second link kinda goes into this. It's written by an animal agriculture advocate who recommends improving the efficiency of, rather than reducing, animal agriculture.