I think it all depends on what sort of game you have, specifically if it is story driven or immersion/exploration driven.
Halo Reach is story driven and would have absolutely benefitted from a voice. Mass Effect was primarily story driven and the voiced protag worked great.
Fallout 4 is the opposite and a silent protag would have been better as silent, like in Fallout 3 or Elder Scrolls games.
Yes. It's surrounded by pit villages, Hartlepool, Darlington and Middlesbrough - all arguable shitholes in their own right - and it is easily the worst of the lot.