Why do you think de vaca called for better treatment after having been held prisoner by them

It was not clearly stated why Alvar Nunes Cabeza called for a better treatment of the Native Americans despite being held prisoner and slaved. However other scholars believed that maybe they were not enslaved by Native American but were treated better. Some also believe that some of the Native American helped them escape from prison together with 3 people who were Carranza, Maldonado and Esteban. Since he stayed also for many years with indigenous people, they adapted the way of living of those Native Americans. And that when he developed sympathy with the Indigenous people.

The answer is metaphase