Honestly? It's the weirdest ship I've ever seen gain traction, but I think the emotional engine isn't really about them as characters. It's about taking two figures who represent such opposing poles in 'Bob's Burgers'—Bobette as this fleeting, idealized 'what if' fantasy for Bob, and Ginger as Linda's perpetually unseen, voice-only friend—and smashing them together to explore loneliness and missed connections. Bobette is all surface, this manic pixie dream girl caricature. Ginger is pure absence, a void. Writers fill that void with a person, and then ask: what if the person who's only seen as a fantasy met the person who's never seen at all? The conflict isn't even between them, usually. It's internal. Does Bobette, who's built her identity on being the shimmering, temporary spectacle, even know how to be real for someone who can't see her? Can Ginger, who exists only through a voice on a phone, trust anyone who operates entirely on visual charm? I've seen fics where the whole drama hinges on Bobette trying to get Ginger to leave her apartment, and Ginger's agoraphobia or deep-seated anxiety isn't just a joke anymore, it's a prison. The show uses them for gags. Fanfiction uses them to ask how we connect when our primary tools for connection are broken.
A lot of the early fics I stumbled on framed it as a quirky opposites-attract rom-com, but the better ones dig into something sadder. There's a recurring theme of authenticity, or the performance of it. Bobette performs a personality. Ginger might be performing normalcy over the phone. So when they finally 'meet,' the conflict is this terrifying unveiling. Who are you when the act doesn't work? The show gives us nothing to work with, so every fic is a massive act of projection, which might be the point. We're all just filling in the blanks with our own stuff.