Disagree i think it's excellent that they put in meaningful choices that lead to seeing different interactions.
Agreed. What's the point of allowing player choice if every scene unfolds exactly the same way for everyone? Usually it's considered a good thing when developers say that you can't see everything on one playthrough ...
There's more than enough Yennefer content in-game to give an insight into her character, regardless of the decisions that you make. If someone is intrigued enough, they can go back and try out different dialogue options and explore her relationship with Geralt further.