bokeh is one of those terms that is often misused, as it does not describe a type of "blur" but the aesthetic characteristics of how out of focus elements look

bokeh is one of those terms that is often misused, as it does not describe a type of "blur" but the aesthetic characteristics of how out of focus elements look from a particular camera & lens. You can apply the same thing to algorithms. Like many lenses though, so far they all have really bad bokeh. You are quite right that the optical effects are far more complex than a single gaussian blur applied on a background mask. They are also much more complex than the modeling currently being done with limited depth information, or even worse, faked depth information.