The Al Bhed language is a simple substitution cipher and it was a thin veneer to pretend there was more depth to the Al Bhed culture than weird eyes, a love of machines, and...no, actually, that is about it. I did enjoy that this different ethnic group basically spewed gibberish and there was a communication barrier, and I was able to not let the shallowness suspend my immersion in X's world.

That said, I use the Al Bhed cipher for messages to friends and to substitute script in images. Why not have a bit of fun?