Even if Jason might not be able to defeat Gods with the same strength as Keran, not without external help, at the very least, his current talent was more than enough to showcase that he was the most talented prodigy of all time.
The fact that he was able to crack open the void was somewhat concerning because he might not understand the severity of his ability owing to his young age.
But that could be solved by showing him the Veil, and the vile monsters that emerged from it.
This was something his father, the Royal Celestia God Yaldra could do after the Tournament of the new Gods would be concluded.
However, the most important for now was the fact that the void crack was only temporary, which allowed everyone to fall at ease.
Or at least, they were at ease for a few seconds before they heard that one of the Royal Ceelstia Gods invited Jsason to participate in the Tournament of the new Gods.