Is there a neutral term for people who tend to avoid face-to-face or video/audio communication?
I agree with @AlwaysConfused that this sounds very like someone with Asperger's.

However, if you want a more "neutral" term, would Introvert help?

Such a person - an Ixxx on the Myers-Briggs scale - typically finds their "energy levels" drain when in groups of people, and recharge when they are on their own.