Aside from that, even if the article is wrong about one thing, it doesn't mean it's wrong about everything.
The search results surrounding some of the topics this article touches on do show heavy pro-meat biases. But even with an agenda, it doesn't make all of the information garbage.
If meat industry pundits are extremists, vegans are similar in their fanaticism, even if tactics differ. Ultimately, the fighting itself is tiresome.
Humans are omnivores, and it's never going to go all one way.
When cost is used as a proxy for ease of supply, essential nutrients are most readily sourced from a menu that is neither one nor the other option, but really well-rounded and omnivorous.
Unfortunately, that means extremists on both sides have partially valid arguments.