Most people need to feel outraged about something. If you don't feel outraged about something important, you will get upset about something trivial. That pornographers are getting so outraged over the animal killing of SexyOutdoorSports, it primarily shows that their moral compasses are broken. There are many things in the industry worthy of more indignation than this.
For porn girls in particular, excessive attachment to animals (and animal rights activism) is a way to assuage the basic female need to nurture which is healthfully satisfied by having children.