This is a major part of the reason why I feel like Caine's redemption feels so unearned, even if he depowered himself, realized his wrongdoings and changed. Most of all, him ripping out the Blue AI feels so... wrong.
I got into a small debate with a moot about how Caine's removal of the blue core scene was okay because the Blue AI was never meant to be a part of Caine and is just something he used to propel his admin ability, but also.... it represents him letting go of his egotistical, perfectionist self?
No matter how much you try to paint the "redemption" in a good light, there's an inconsistency waiting behind it.
Caine removed the blue AI to "free" it from him, and they are separate characters? Okay, then why is it that the blue AI symbolizes his bitterness, his perfectionism, and his overblown ego? There's also no evidence to suggest that the Blue AI was always separate, even after assimilation. This revelation only comes at episode 9, way too late to confirm.
Even then, how is Caine using it's power, if it hasn't become a part of him? We see the Red AI devour, and fight for control with the Blue AI until there was only the Red core left, and the Red Core was able to build the circus. By himself.
What's to suggest that the Blue AI is still something that exists as fundamentally separate from Caine, while simultaneously co-existing, growing, (though repressed) for the last 20 or so years?
Lowkey, this is giving "The Thin Man is trying to save Mono from the tower even though he was trapped in the belly of the beast that's known for brainwashing people to do it's bidding."
The red and blue glitching eyes can be interpreted as Blue trying to separate itself from Caine, but it could also be interpreted as Caine having an internal struggle between his self-worth and ego, which should be something that's just a him issue, not a Blue-Red issue if they are separate entities. And the Blue AI has been shown to be affecting Caine's behavior.
"Caine is letting the blue AI free because he held it as hostage, and he's realized the value of free will!" But the core is not even a person. Not conscious enough to be one on it's own. It's just... a core. An object. It doesn't form into an avatar of it's own choosing-- Hell; it doesn't have a voice, and can't even communicate that it has it's own personhood to signify that it really was trying to break out of Caine. The red core has a body, how come the blue core doesn't? If it really is someone that Caine held hostage, and is now letting free?
The only time the blue core was able to speak is if it was still using Caine, and identifies itself as Caine.
You can't make the excuse that it's episode 9 and it has an ambiguous/open ending where the blue core is now free to explore it's own personhood, to drift away to the void as Caine waves it goodbye, because episode 9 is supposed to wrap up every character's arc without leaving loose ends.
By thinking so, you're crossing headcanon territory, and that is NOT a satisfying way to end the Blue AI's arc in an episode that is all about "identity", and "changes".
Also, it's pretty concerning that the AI that is supposed to be amplifying/embodies Caine's ego is just... let free. What's stopping it from going back into the circus, and wreak havoc in the same vein Caine was, because it was a part of Caine for so many years too?
I'm getting a headache, but point is-- I agree. Episode 8 ruined Caine's character. Episode 9 was a half-assed attempt to bring him back and redeem him, by placing the blame on the Blue AI because the Blue AI was amplifying Caine to overblown degrees.
Something that we've seen happen with Scratch and Kinger's characterizations too, so that Kinger gets off scot-free and has "redeemed" himself during his years of isolation, while Scratch is the scapegoat for the creation of the trapped humans.
But yeah. Episode 8 Caine? Malicious and irredeemable, no matter how much it pains me to say that. He deserved his exile, and he should have never been revived if this was the case all along.