That did not negate my point. There are times when people stop increasing destructive power because it is redundant or no longer cost effective.
To add, while the world is constantly creating new weapons, it is also creating many more methods of making everyday life more convenient, comfortable, and easy.
Peace.
Graduation ceremonies are activities fraught with symbolic meaning and ritual process because that's what a ceremony is by definition, and in this one you are becoming a peer of an ancient immortal sorceress so yes I think it's a fairly safe assumption it contains ritual and symbolism.
And what part of ANY of the interactions they've shown with Serie so far would suggest that she'd have any interest in that kind of frivolous display?
We didn't find out SHIT!
They showed 3 seconds of Fern getting her spell and 0 seconds of anyone else getting theirs!