Answer
Ordzhonikidze's refusal to purge older workers, especially skilled workers who were essential to the country's industrialization efforts, led to a rift with Stalin, who viewed such workers as potential threats to his power. This disagreement exposed a fundamental difference in their approaches to industrialization, highlighting Ordzhonikidze's concern for the well-being and expertise of the workforce, in contrast to Stalin's emphasis on ruthless efficiency and control.