It obviously gets a better reception than the mute PC. New players can easily identify with a player who echoes what they chose rather than a mechanical choice-response-response-choice-response system.
Apart from that it was done in older RPGs, the non-voiced argument doesn't really have much backing behind it. Publishers are more willing to go that extra mile and pay for a fully-voiced PC than a mute reading-intensive system.
Also, cinematic experience.
If they must go wheel-style word-based choices, I hope they take Human Revolution's idea of blending both word-based and full-sentence options.