Do you think that SOF is unique in fighting at night? I worked pretty exclusively in Iraq between 1600 and 0400 and I was just victor line company infantryman. We did occasionally conduct company sized presence operations but we mostly worked in sections. Section 1 left the wire between 0400 and 0700 and Section 2 left the wire between 1600 and 1900.
I think of all reasons for a singular camouflage pattern, what you listed is not a valid reason. SOF cannot win wars themselves for a multitude of reasons, mostly because they lack the size and the fact they are designed to win wars by themselves. It's not what they are designed to do.
Big services must continue train across all environments because 20 years from today who the hell knows where we will be fighting. We also train differently across services. Marines bill themselves on being an expeditionary force. Afghanistan is the furthest inland we have ever fight.
In the early 2000's, we planned poorly. We didn't train to fight in the open desert and fight COIN. And it bit us in the ass. The best time to plant a fruit tree was 20 years ago. If you didn't plant in then, the best next time is now so that in 20 years you can bear fruit from that tree.