When many people in the world were talking about him, Kai also faced the difficulty where he needed to talk with many people. Most people who came here were either from the media or prominent families. They only wanted to find one thing, which was whether this Kai Carter was a real deal or a fabricated lie created by the government.
Unfortunately, they couldn't find a single clue from him due to him putting a poker face all the time and answering them perfectly as if everything was scripted. Kai also understood that doubting him would be a natural thing to do as not only Nathan led that mission, but Ria Ross also participated in it. There were some rumors about Nathan instructing what to do, and Ria Ross killing the beast before letting Kai get the credit.