Curious.
I remain convinced that Chris's descent into thinking he's literally Jesus on top of everything else is due to the complete lack of pop culture for him to consume while in prison aside from the Bible. However, as the recent letters show he really has been regressing with what he focuses on, especially with a big 'lore dump' like this. I have to wonder if he's finally reached the point where, because he can't simply tack on new shit to his delusions besides identifying as Jesus, he's actually forced to revisit some core fundamentals with said delusions and so we're back at CWCville after all these years. It's the stuff that he relied on back during what he would consider his happiest years, which was MHS of course, and in that sense it is his proverbial Rosebud.
He still wants to believe he's more powerful than God or whatever, I don't think it's possible for him to ever back down from that because it would involve relinquishing power and we all know Chris won't even admit he never had those powers in the first place. But at the same time he might be going back to basics in his mind regarding Sonichu to try and get SOME sense of security, since he's facing the reality of losing everything he's ever held dear and there's literally nothing he can do about it in terms of improving his outlook.