While I haven't read this yet, I just came here to comment that just because there are much worse things that exist in this world, doesn't make something else any less wrong or bad.
I.e. Just because there are people dying of starvation in third world countries doesn't invalidate the people harping on about the horrible treatment of animals such as cows. Yes, the cooped up and neglectful way of treating animals such as cows does maximise space usage and hence more food for us, doesn't make it not wrong just because those of us in developed have the 'privileged' access to more food while people are starving some place else.
The amount of hate this story gets is honestly so funny. People behave like they wouldn't know that there is much, much, much worse out there.