Graph from the article:

Image

Per capita beef consumption is down slightly, but not as much as chicken / poultry consumption has increased. People are generally eating much more meat overall per capita. Chicken and poultry still have a pretty heavy emissions profile, it’s just that beef is somehow worse. The net increase in meat consumption is still a massive net negative on the climate

---

In terms of ethics, switching to chicken results in significantly more induvidial chickens being killed because of their lower slaughter weight. The factory farms that house the vast majority of chickens keep growing larger and larger and quite disturbing. This is true around the world. For example just in England alone, there are at minimum over 700 factory farms for chickens, four of which have over a million chickens