Boncing off this post by @duckieslament (Hi, I didn't want to steal your notes from you or make the post too long, I really like your analysis)
There's also a symbolic angle as to why I think Duckie is correct about Bon idolizing Rosemary and not being Jack
Two posts ago, I talked about the symbolism of American Gothic in The Walten Files but this time I'd like to talk about the opening monologue in Faces of Grief and the whole reason why we keep seeing these statues in association with Rosemary
There's a few cultures that historically believed that statues served a greater purpose in worship other than just being a means of showing appreciation. Since the statue used in particular is the disarmed Venus de Milo, I'll be focusing on Greek Culture.
Statues were built with the intention to "House the Divine." Statues were treated as potential vessels a god may choose if they decided to make themselves present among humans or worshippers. Because of this, every detail mattered as to not potentially upset said divine entity; there are a few cases of statues being rejected for not being modest enough or not being perfect enough. Tl;dr, the statue represents divine presence among worshippers.
Early Christianity considered this belief to be "False Idols", something akin to pagan worship and considered the statues to be demonic deception which played a part into why the statues were targetted specifically during religious transitions or tensions; Hence the destroyed arms.
Faces of Grief largely centers around Rosemary and Bon's interest in "aiding" her.
Rosemary in their dynamic at first is the sculptor, she provided an identity when Bon needed it most through the character that she helped create.
This dialogue is from the concept phase of designing Bon, the fact this is the specific memory highlighted right in the middle of the episode shows it's significance to the over all importance of her having created Bon to begin with.
The fluctuations in his voice, although consistently varying in terms of tone and pitch, seems almost ecstatic to proclaim this new identity. He continues to sound profoundly ecstatic and obsessive over the idea of having the opportunity to return the favor, leading to what I think to be the most chilling delivery
This, is not the love of a husband not even one that's been twisted by the events and grief throughout the episode. This is the obsessive ramblings of a distant observer who's dreamt of this moment for a long time compared to the way he's addressed the others in the past.
In rosemary's "exit" sequence before it snaps to what she is in reality, she's an angelic lamb with her arms twisted and mutilated similar to the statue used to represent her
With this last line, Bon almost sounds choked by some sort of emotion though it's unclear exactly what it is that makes his words have that edge between them. He desperately wants her to relish the life he's given her and desperately wants to hear that her "Sculptor" did a good job granting a vessel for her spirit.
Another thing is Sophie mentioned she was talking to an angel that wants to help her and her mother, more so she's "Been" talking to this angel, implying it was a lot longer than when she initially decided to tell her. We aren't given a clear timeframe as to when this started but it's likely it was while Jack was still present since Bon is a spirit of opportunity, he'd likely take the chance since Sophie was left largely alone.
This is more speculation but I believe this is symbolic of the point when Bon started talking to her through the bear especially since she's seen with it on her desk instead of in her arms the day Jack goes in to wake her. The bear also looks a little different.
Before this point, the bear is always seen close to her and in her arms in some way and even while she's in the attic she doesn't seem to have it close to her anymore.
This closes my extra two cents, I've also been seeing people say Bon is Jack and wanted to say something