The protagonist isn't really silent in bethesda games from 5 years ago, though. They're not voiced, but they're not silent. They say dozens of sentences to other NPCs, and get lots of varied responses from them. They have dialogues, and that's quite different from "nods" and "shrugs".

Although enormous freedom in dialogues would probably be wasted on XCX, they could have benefited from a bioware-style wheel with 2-4 options per conversation they're involved in.