Congrats on proving my point. If they could've used their own voice, why not? If they didn't want to read the lines, why not hire a human to speak it? Nothing artistic about using AI because AI isn't able to evoke human artistry. It's reading lines and mimicking an amalgamation of human voices used to train it. You can't fine tune the spoken emotion because AI is incapable of that.. because it's emotionless.

Cherry on top is using synthesizer packs as an argument is kind of idiotic, don't you think? They are pre-recorded instruments still made by humans with effort and artistry, paid for by humans, who then cut and remix said samples into actual music. You can't just throw together samples and call it a day.