Even after seeing the winged sword emblem which was casted a moment ago as well as the ring who had the same design in Aster's let index finger, some were in disbelief, the fact that it was impossible to directly enter as a core disciple for males was common knowledge in Galatia at this point.
And it's not as simple as frogs looking from the bottom of a well, the Myriad Occupation sect has received "visitors" who tried to get that status, through an alternative trial with the same difficulty that was set for Aster and they failed miserably.
After news spread that said visitors were from high ranked stellar systems, it became a law that it was impossible for males to get the status of core disciple from the very beginning, and to acquire it through tasks and contributions they had to wait ten years at least, while only receiving the benefits of inner disciples.