Of course some of the Yozi care about ordinary humans. They just aren't human, so the way they express their care isn't identical to the way a human would.
For instance, Adorjan expresses her caring for humans by murdering them. Sure, humans don't want that, but that's because they don't understand. It's like forcing a child to eat their vegetables when they don't want to. They don't understand how their mother can connect "I love you" and "Eat these horrible things you don't like". She has a perfectly logical reasoning, but a small child can't completely grasp it.
The mother isn't a monster for forcing their child to eat vegetables. She's just operating on a different plane of thought. So too is a Yozi operating on a different plane of thought than a human.