1) They pick and choose who they want to flesh out completely arbitrarily. Companions should without a doubt have the most content compared to regular NPCs and yet that isn't the case for like 3 or 4 companions. Kalysea alone probably has more content than Atugia and she's been in like 2 fucking patch notes.
2) Fleshed out is a generous term. That implies something is multi-layered and has actual meat to it, which none of these characters really have besides amount of content. But even that is downplayed by the fact that so much of it feels copy and pasted with one another. What the fuck is the actual difference between Kalysea and Orlaith? "Hur dur one is just a teensy bit more degrading than the other!" this absolute negligible differences in personality traits is part of the issue. I could not tell you even half of the female content in this game because all of it just melds together into a soup because it's all so samey. I feel exactly the same fucking Cait, Atugia, or Azy as I do any village slut I come across.
Also can we actually avoid getting the thread nuked by scrapping this completely autistic conversation about what constitutes sex?