Honestly, this lines up with the more detailed context I've seen floating around. It's very easy to go hate him with "he was shit talking fans" but knowing "he was shit talking fans who were stalking and harassing him and who were harshly criticizing him for shit that was in no way under his control" is more understandable. Sure, he fucked up in trusting an untrustworthy person, but I know the things I think and say about the annoying people I work with... I don't know that it should have cost him his career.
Feeling very "everyone sucks here" about this. The saesangs stalking, harassing and bullying him suck. His girlfriend sucks for leaking their private conversations and removing relevant context to make him look worse. And sure, he sucks a bit too for venting harshly. But this detailed apology just makes me feel bad about the whole situation. JYPE failed him by not giving him an outlet to process the trauma and anxiety of what he was experiencing.