No, they should give Link a voice too. Hated how the cutscene dialog would just act like he'd respond in BoTW.
Give options to play as Link or Zelda. Give both a bunch of equippable looks. Give Link voice acting. But that's as far as I want it to go, I don't consider them blank player avatars and don't want them to become that.
I wouldn't be against that either. Just hate when it's done like they are actually having a conversation, but we just hear one side of it. If you wanna do a silent protagonist, write the dialog as such or give no voiced dialog options at least. Making them seemingly telepathic is always more immersion breaking than them being silent protags adds to the immersion for me.