Amount raised through Kickstarter: $2,032,434
Amount which Larian said would be dedicated for voice acting: $0
Saying that they got X through Kickstarter therefore they can afford it is a fallacy of some kind. Larian specifically excluded "voice acting" as one of the goals of the Kickstarter funding.
Not only did they not promise to spend that money on VA, if they did, it would probably be violating their promises, because the kickstarter money is aimed at funding specific goals.