Yeah, and he's always able to do the cyber conference calls with the others.
Maybe he has just the basic cyberbrain enhancement and it's just that the rest of his body is natural unlike everyone else, so they call him that? But then he'd still be at least somewhat cyborg so that'd be a bit weird. Whatever it is, Aramaki seems to be the same or somewhat similar.
I don't think we'll ever know since the only time I think we got any details was a vague mention that he got further cyberization before Solid State Society, where his cyberbrain got hacked.