Both sides of that, if I’m understanding you correctly, display concerning aspects.
I think even with peer reviewed reports you should look at who commissioned it. There’s sometimes a steer to what the commissioner wanted the answer to be, and sometimes that’s how they set the parameters of the research.
Similarly although, in my opinion, an assessment of environmental impact of the meat industry should include livestock production (I’m not aware of the work so it may have been a different title, back to point 1) the Govt should simply leave it out of the report wasn’t relevant to their needs or commission their own report, or use others that did cover the whole life and death cycle if that’s what they wanted. Of course if they commission it you could have the point 1 issue again
I saw a farmer interviewed last week, who spoke very passionately about the farming of livestock not being damaging if it was done correctly. He had a loss-making beef farm, but was reasonably comfortable and didn't actually need the farm income, so he'd decided to stop intensive and farming and roll everything back several decades. He re-wilded much of his farm, allowed the animals to wander from field to field, stopped giving them processed feed, stopped supplying supermarkets and despite it not being his primary aim, he'd actually returned the farm to profit.
He was very realistic and appreciated that in many parts of the world there were people that didn't have the luxury of being able to afford to do what he did, but he saw the future as a general move to meat being a more premium product, eaten less regularly, just as it used to be. It was quite an interesting programme.