I think they are still in some sort of WIP. I believe as it was shown that in time they may change or hopefully get better writing. As someone pointed they are really over the top and most of their dialogues just don't show adult, but instead a bunch of ppl who doesn't know how to communicate normally without trying too much. One or maybe 2 companions, ok, but all of them share the same feeling for me. After my second playthrough I was already bored in talking with them tbh.