there is alrerady way too much voice acting for a game of this caliber
There is no such thing as too much voice acting in this game - especially when it is SO good! (Especially the narrator's voice and Astarion! Their acting is simply brilliant, I could listen to them all day.)
I'm currently re-playing Dragon Age: Inquisition while waiting for news on BG3, and while I am immensely enjoying being able to hear my character's voice, and not have one-sided voice conversations, my mind boggles when I consider just how many variations of dialogue lines went into that game. At least in DA:I they just had 2 male options, 2 female options to do all of the lines. Here they have not only a male PC and female PC (which would require at least 2 voice actors of each gender to cover all the variations of how different races might sound - and we don't even HAVE all of the possible races in the game yet) but also if you choose to play as the origin companions, they have also had to voice THE ENTIRE GAME. (I've listened to some of the datamined voice lines and recognised bits where the actors narrated an in-game situation as their characters)
Having 10+ voice actors voice THE ENTIRE GAME as the player character (PC or Origin companion) in all its different variations is mind boggling, not to mention expensive.
I now understand why they give us text on our end. After a while I stopped noticing it and just imagined how my character might say the lines anyway.