This was the worst possible outcome for Chris.
Null wanted to lend him a hand, kill two birds with one stone, motivating him to work on something in an eventual post-barb world and rewarding himself for his efforts by going to one of the few places he can enjoy himself, brony conventions.
But not only did he burn his bridge with Null about making his ability to attend to his errands completely void, but also entirely betrayed his trust by lying to him about having a legitimate 50+ year old cougar fuck budy and didn't take $750 from his mother's bank account right in front of Null.
He is forever going to be teetering on the edge of poverty now, we already know he's terrible with finances and spends most of his tugboat on toys, fast food and other junk, he will face (at the very least, somewhat harsh) consequences for his actions, he has no one like Null now who was probably one of the best safety nets he has had in years, better than the watchdogs, better than the CWC Protect Squad, better than Rocky, and he'll forever be surrounded by these new age weens who will continue to mock his existence wherever he goes and see him as nothing more than a disgusting motherfucker that can't ever redeem himself from this situation.
Boy did he really fuck up, big time, this is about to be the beginning of the most unstable and messed up parts of his life, as if it couldn't get any worse.