Yeah it's been a while since he's actively mentioned the trolling. It's probably because he tuned it out and not many people do it these days, not counting weens who pretend to buy into his RP nonsense (and the fact that there aren't any people who can manipulate him into producing over the top reaction videos). Now he's been made aware of shit that was going on during the 2011-2014 slow period where he wasn't really paying attention to anything that was being said about him, so now it's fresh in his mind. Also I've said before, but Chris also seems to put on different personas as a way of avoiding being trolled. Sort of like how he thought Rollin' and Trollin' would convince everyone he was actually normal when he wasn't recording himself. Then when it caused the Ian Brandon Anderson fiasco, he promptly dropped that identity.
Ever since coming out as trans, he hasn't really been fucked with as badly and managed to find a social circle that hasn't rejected him yet, so he probably thinks that it's because of the troonout. I've said it before, but he seems to be slowly distancing himself from "Christine" since now he's finding out that there was still shit going on under-the-radar. Another thing that I feel factors into it is the brony fad dying down; yeah there's the TSSSF project he's been working on, but he's also slowly bringing Sonichu back to the forefront. No horsefucker community to get attention from = reduced interest in the property said-community is based upon. Again, I might be wrong, and it might be misplaced optimism, but anything that manages to stir shit up within Chris's head seems to slowly regress him back to his classic self. Time will tell.