I’m just going to yes it was be because of an ask I just had about the potential power if Bonkai babies and a couple weeks ago I talked about a fic I had in the works that followed in that vein (althoughI kept magic plot hole babies because I liked the contrast between a forced pregnancy and one by choice).
But essentially, yes, Plec wanted Messiah children, and she had two very powerful characters who could produce those messiah children and instead chose Alaric, a human, and Jo, barely had magic, for these children and put them into Caroline, a vampire on a show filled with vampires.
The lengths she went to to make these characters relevant and even then it’s just an extraneous plot would baffle me if it didn’t know she was a) bad at her job, b) writes like a 4 year-old playing with dolls, and c) a racist piece of shit.