The man had been wrong. It'd been 6 years and he was still looking out for everyone, victims and UnSubs. He wasn't jaded. That lawyer in NYC was just another person that had underestimated him.
"I'll give you 6 years. At that point, a tiny part of your brain'll be asking if what this guy's doin' ain't the right way to go."
Spencer Reid defied everything that people told him he was or was going to become. Loser, loner, sinner, jaded. No. He was compassionate, modest, empathetic, good.
He has changed. He's become confident, comfortable. He's lost some of his naivety but has kept his to his moral code. To him, it doesn't matter who is in trouble, if he can help, he would. If he didn't really care anymore, if he had become jaded, he wouldn't have jumped into the coldest part of the lake in October to save the man who had killed 6 people including his own father, and attempted to kill two more. If he was having those kinds of doubts he wouldn't have done it.
The job had changed him. But instead of turning to anger against the UnSubs he threw himself into the cases to catch the perpetrator and bring some closure to the families. He hasn't turned a blind eye, to anyone. Hasn't let somebody die that he could save, no matter what they had done.
Spencer Reid believed in justice, for all. And that isn't going to change anytime soon.
So this is the shortest thing I've ever written, but I hope you like it, it's kinda vague and I'm not sure if I like it, let me know what you think! Constructive Critisism is greatly appreciated!
PS... disclaimer... legal jargon: I own nothing