Why did Usman dan Fodio criticize the new bureaucracy after the jihad?

Usman dan Fodio criticized the new bureaucracy because he believed that the original objectives of his reform movement had been largely forgotten following the success of the jihad.1

Specifically, he expressed concern that the emerging administrative structure and its associates were evolving into an oppressive ruling class, which stood in direct opposition to his vision of a simple, non-exploitative system governed by piety, integrity, and justice. Throughout his later years, he used his weekly meetings to voice these criticisms, lamenting that the new officials were failing to uphold the ethical and religious standards he had initially set for the Sokoto caliphate.1