Errr, citation?
Not quite what you were after, but I saw this Twitter thread that claims (with evidence) that the greenhouse gas contributions of meat and agriculture are overstated: https://twitter.com/fleroy1974/status/1053398265817894914
I was under the impression that guy was paid by like the Belgium meat board or something. I can't find the reference to that right now so might be wrong. (I came across him in another thread where it was discussed)
I saw a recent study that said everyone going veggie in the developed world would only have a couple of percentage points effects on emissions. Surprisingly ineffective.