How much do you guys think that Jace chooses to believe his delusions, as opposed to being forced to live with them, like you see with schizophrenics?
I'm asking cause, there is quite an element of willful role playing of sorts with Jace.
A genuine schizophrenic has no choice in believing that the CIA is sending him remote thoughts through micro transmitters. It's his reality.
Jace on the other hand? Since he got criticized and called out on his claims, he modified them to be a "retired former veteran" as opposed to just a veteran, which he tried at first.
He's also smart enough never to have attended an IRL veterans group or vet event (or even online veteran groups), since he knows that they wouldn't take too kindly to "retired veterans" and would probably kick his ass, the minute he told them what has caused his PTSD...