I don't understand why they don't simply have those parts of the game be without any voice acting. Plenty of games don't have voice acting. There's nothing wrong with a mod not having it.
I agree. Particularly because the voice acting is usually just distracting you from what you're reading. There you are, reading the fifth sentence, and the voice is still slowly speaking the beginning of the second one.
all of the direct dialogue has subtitles built into the UI anyway. I can't remember if that's an option for the radio, but if it is (or could be implemented), then this seems like a really weird reason to cancel.