Pre-Crash 2.0, perceiving the Resonance required a neural structure that was
highly flexible, adaptable, capable of being touched by something that was far, far 'underwater'. Otaku were young; the essentially technomantic capabilities they possessed required the highly-adaptable brain structure that is
only found in a pre-adult mind, before the neural pathways begin to solidify. (National Geographic has some fascinating reading regarding this, actually; check 1-2 years ago, looking for an article about teen brains.) That solidification is what they called 'Fading'.
Crash 2.0 took those deep seas and raised the bottom, so to speak; it was no longer necessary to have
quite so incredibly adaptable a neural structure in order to be able to perceive the Resonance. As even adults (even ancient fogies!) might now be capable of this perception, Fading as a term came to refer to the temporary psychological and physiological exhaustion of bending the Resonance to your will. So instead of 'Fading' for good, you just 'Faded' for a while.
There are no longer any indicators of age being tied to loss of technomantic abilities.
And Namikaze,
everyone knows that Pax likes eggs. Preferably scrambled.
