This mentality is exactly why you have to question just what impact exactly the advent of trolls even had on his life was. The majority of his lovequest shenanigans happened before 4chan; his mistreatment of Megan was all on his own; his terrible spending habits; rampant homophobia; his house burning down was all his own stupidity; the blue arm issue; etc. and so forth. Chris has always been a train wreck. If trolls did not exist you can bet SOMETHING in his life would have caused a similar outcome of him being a 30-year-old mopey asshole.
So it's hard to question "troll ethics" beyond "Yeah, that could have been funnier." As I mentioned before, I think it was funnier in the past, but maybe that's just because Chris was funnier. Who knows? You can't really blame current troll ideas on how mean-spirited they may seem since younger Chris may have had a more goofy reaction to it all.
Saying that trolling had little effect on Chris is like saying the sun has little effect on ice. Of course there has been an effect and a fairly major one at that. The trolls provide Chris with something he needs, which is an enemy. He's had imaginary enemies his whole life, Boyfriends, Manajerks, Greene County, all of them entirely unaware that they are Chris enemy, the focus of his hatred and his driving force. Everyone has a driving force and we kid ourselves if we think our drives are healthy or acceptable. Take me, I get off on personal success, especially if that success is visible to others. I love being the best at what I do, whether it's my job or games or whatever I do. I'm not a bad loser by any means, I can take a loss with grace and magnanimity, but if I win I like other people to know they lost. Sometimes that means they buy me a beer or something, other times it means they lose a work visa and get sent back to Eastern Europe. My point is, that we all have drives. (Hellblazer only appears truly happy when he's locking my threads, for instance.)
Back on the subject of Chris, enemies drive him. Chris is a Saturday morning cartoon character whose every story is entirely dependant on the antagonist. We are Claw to his Inspector Gadget, Gargamel to his Smurfs. He has to have an evil to fight or it's not worth his trouble. Chris wants a girlfriend so he gets to beat the enemy, Noviophobia. Chris wants money so he can beat the enemy, Poverty. He has pepper spray to combat his enemies which in that particular case seem to be anyone in range. If Chris has nobody to fight, he does nothing. Without the trolls, Chris would have found another enemy and, depending on that enemy it's debatable whether his life would be better or worse because, and this is the important bit, the trolls will do him no real harm. No troll is going to turn up on his doorstep and kick him shitless. Hell, without the trolls he may have ended up with Michael Snyder as a real enemy because without trolling to distract him his Game Place antics might have been far graver, far sooner. Anyway I'm digressing into wild speculation.
Wall of text aside, yes Trolling has had a huge effect on Chris and will continue to do so his entire life. Whether or not that effect is a net gain for Chris is up for debate.