But you know that voiced protagonist is happening anyway, right? It's been already confirmed. If you want your character to be silent, that's alright. BG1 and BG2 had this option, there's no reason to believe that BG3 will be different.
But majority of players want to have voiced main character, including me.
Larian already said they won't be swayed by what the majority wants all the time. And I will never give up on silent MC, because silent MC is what RPGs are all about. Maybe we should provide the voiced option for people who can't live without it, but preferably, resources would instead be used for coming up with conversations with many many many more options.