I don't know how many people here fly IRL, but the visability we have in AH1 is in my experiance, a once a year event in the UK aviation (alright maybe a few days 3-5?), in mid august it would be pretty normal to have about 6 miles of visibility.
In fact the level of fog now set as default in AH2 is much more realistic for a british summers day

, AH2 also needs an inversion layer to totally hide the ground above say 6-8k to be realistic.