No, that's not what I'm saying. What I'm saying is that constantly nodding when not talking - like all the way through, even to things being said that can't really be nodded to / something isn't said that could be nodded to - looks really awkward and has been added to solve the blank stare problem, but creates another.What are you supposed to do then?
Just sit there and stare into the camera?
More natural would be occasionally looking towards the person talking, then back to camera, then to different points in the room. As someone would do whilst listening or in conversation with someone else... And then yes, nodding, but at points being made that they agree with... Not constantly, even at the start of sentences, for example...