A voiced protagonist works well in a game where you’re playing a specific person, like in Mass Effect.
DnD is about role playing. There’s no viable way to add voice acting to the protagonist in a game with this amount of character customization. Fallout 4 tried it, got massive backlash, and reverted to a silent protagonist in F76: Wastelanders. And that game has a considerably more narrow customization. In BG3, some people will want to play an aging dwarf with a deep voice, others a gay teenage elf. A lawful good human Paladin and a chaotic evil half-orc Warlock won’t sound the same. You would need so many different voice actors to bring every player’s fantasy to life that it’s just not financially viable in such a massive game as BG3.
