You just have to go along with the idea that skin provides no indication of meatiness and that the two aliens are Ford Prefect types, then the short film lands just fine.
It doesn't match my idea that these are two energy/mechanical beings discussing a faraway planet from their spaceship or whatever, talking theory without actually seeing the beings they are discussing.
More seriously, what you describe is partly the short story. The short film adaptation doesn't quite work for me, for the reasons I explained in other comments.