This extrapolates from current popular meat production practices which are themselves quite new. In order to make general conclusions like this it is necessary to account for the variety of production alternatives available and in development. Vat grown biomeats are very new but appear to have quite different consequences from possible mass production. The problem isn't the meat, but how the meat is produced.
I love how they made the article fair and balanced by including a quote from some PR person at the "North American Meat Institute".
It is weird that this article didn't make it to the top page.