A lot of people were already expecting him to make a statement about it, so it wasn't too shocking to them. But it was still shocking that he revealed it.
Although everyone would believe what an Heir revealed, there were still doubts. What if she said it just for the heat of the moment? What if she said it simply to profit her territory in the wake of the chaos?
Though the heirs with Destiny must think carefully about their words and know how to speak to avoid revealing unnecessary things, they are still young and can make mistakes or act according to their whims, regardless of the consequences.
So, while it carried weight, it did not carry the same weight as Gray Allen's words. If he said there were traitors in the race, then no one would doubt it.
