That's what you think "it's about". The article was not making a judgement that raising animals for slaughter is wrong.
You might want to note that I was replying to a comment, and not the website.
And the comment on the article by randyrand is "You show me the worst case scenario, but what is the average case?" which has nothing to do with the morality of raising animals for slaughter nor does the article.
"Its hard for me to seriously consider changing my opinion from an article that shows its biases so clearly. ... Not eating meat or drinking milk is not going to be an acceptable answer."
The fact that in all cases, animals are born (without choice) into captivity, for the purpose of having their life exploited or ended, is one of the most compelling reasons you should consider your consumption of meat and whether it's really worth it.