They could probably just do that. Just move to a different career path and show support for an animal activist group; they would get a chance to talk about a cause they support, talk about their father on camera, and honor what so many people remember him for.
I am sure they have the pressure of expectation on the, but from how genuine they come across, they were inspired and shared their father's and mother's (don't forget her) love for animals.
This, so much. Every time they get posted I just feel very uncomfortable by this. Just because no one is holding a gun to their head, doesn't mean that they don't feel obligated to keep their father alive as it were. I honestly just can't believe that this is genuine.