Screwing up by landing at the wrong airfield and not being able to see something 3 miles in the distance are totally different animals. I'm telling you from also being a RL pilot not being able to see something prior to bomb release is not realistic unless it is occluded by clouds, haze layer, etc..
Here is a pic to show visibility from 5-7k while IN the haze layer in the good old South East. Hazy days do restrict visibility distance especially when you are in the haze layer, but as you can see from the pic (attached), you can make out the other airfield from ~12 miles away from around 5k alt.