Link has more creative dialogue options in BotW than any other game. He's got plenty of characterization. I don't believe he needs his own spoken dialogue boxes to get that across. A mute character doesn't stop being a character just because they're mute. He doesn't have to talk in the...
Breath of the Wild did pretty much exactly what you described as set-in-stone, and it did it pretty well, I thought. Even Age of Calamity did a good job having Link express himself through his behavior and expressions during the cutscenes. I'm fine with mute protagonists, they don't have to talk...