These cultivators from the sects who were avoiding the disaster would never know Tang Zhen's identity, let alone know that he was actually the source of the disaster.
Even if they knew, so what? the Xihe realm's godly monarch was defeated by Tang Zhen. How could they, mere cultivators, defy the heavens?
The reason why Tang Zhen pointed it out was because these sect cultivators were quite interesting.
The sect leader was pedantic and paranoid, and so were the disciples. They were clearly facing a great disaster, but they were still "stubborn."
Compared to other cultivation practitioners, they were indeed very special.
However, an interesting soul could not save a life. In the face of this catastrophe, he could not hold onto the slightest bit of luck.
As for whether the other party would listen to his advice and give up on the people or destroy his own cultivation, these had nothing to do with Tang Zhen.