Hi, as can be seen in the pictures below, Foliage/Grass/Trees do not catch moonlight properly in as they would in reality. Meanwhile buildings and other parts of the landscape are illuminated accurately.
Apart from being unrealistic this issue leads players into a false sense of security as they expect to be hidden, judging by the light around them, when in actuality the player models are illuminated (correctly) which they themselves cannot see as it's 1st person.
The flora is correctly illuminated on 3rd person servers albeit it a little bit too much. I agree it should be toned down for 1st person, but only to a realistic degree and not further as is now.