It's impossible to write completely neutrally. Editorial decisions like what information to include or exclude, what sources to cite, what order to present information in, what illustrations to use cannot be avoided and inherently present some kind of narrative.
It absolutely is possible to write completely neutrally. All it takes is for the writer to be aware/honest of their biases and to have a goal of achieving a neutral perspective. Of course the goal of most writing is explicitly to not be neutral.