Now granted, I haven't read the entirety of the 127-page report, but it doesn't seem to say much of anything about CAFO at all (searching for "CAFO" or "factory" gives zero results, and searching for "concentrate" gives five results that all have nothing to do with CAFO), so I'm not sure how that's supposed to function as a citation for the specific claim that CAFO is somehow more environmentally friendly than free range ranching.
What the report actually seems to be claiming is that free range cattle ranching is not carbon neutral on a global scale. It can be carbon-neutral or even outright carbon-sequestering on a local scale, however, with the right diet / plant availability and other factors, albeit with other environmental tradeoffs/externalities (for example, the crops that help reduce methane output when used as feed tend to require more fertilizer to grow).
