"This Ares College Principal is still unclear of his situation, although it should be quite good. But you, punk, after wreaking so much havoc, have you thought about your next step?"
Regardless of how the Titatitan situation had played out, Wang Zheng was inevitably looking at having to play a huge role in the military. Broadly, carting him off to military court for a hearing was possible, but the reformist faction led by Meng Ao gave no ground, and they could act even in the absence of their leader. Furthermore, the Titatitan Star situation was so volatile, and could change drastically in the blink of an eye. No matter how you looked at it, Wang Zheng had successfully accomplished his mission and brought glory to the Solar System. From the report, it was apparent that Wang Zheng had done good work.
As for the agreement that Wang Zheng had with the people of Tita, only a few people knew it. Once exposed, it would bring an uncontainable risk to Wang Zheng.