Well, it's the limits of the medium, really. Ships are supposed to be made of metal or some alloy, but if you zoom in far enough, you see the pixels.
It's an issue of resolution. Not just literal resolution - as in ship textures - but how much detail CCP has been able to build in and make work with game mechanics.
Crew, supplies, food, etc are things they haven't managed to put in yet, just like you can't zoom in and in on your ship and see more detail and you can't (yet) leave the pod, IG.
My feeling is, though, that that doesn't mean that in the game world your character can't leave the pod, walk through corridors in your ship you can't see IG, go to some stationside quarters that overlook the hangar that also aren't IG, etc...
Crew pay - or seeing crew at all - falls into the same category as being able to look closely enough at the hull of my Thant to see the texture created by the armor repair channels, least that's how I look at it.