Here's some more information that might help you if you'd like to help with the investigation:
We discovered that wad paths for the .bsp are from the Sierra directory so this might indicate its release time frame of around 2000-2002~.
There is an uncommon .wad used called "cb1.wad". Has anyone seen this .wad before? Could it stand for "csbanana" or the author's initials? Or a clan tag?
My sources from Reddit claim that scoutzknivez wasn't the original map and that there were older designs from the same author out there. Does anyone know of similar maps as scoutzknivez from the retail era of CS?
One source claims there's a map by the author with a truck in the middle. Our hope is to track down similar maps that may give us a clue to the original author.
My Mapcore post had a user claim "RD" made scoutzknivez, but I'm on the fence about the claim as RD pranked the CS community for years about making fy_iceworld. The original author was a 15 year old Taiwanese kid named "FantasY" hence why the prefix of iceworld is "fy_".
There is a CS:GO scoutzknivez server where OG clan members hang out that might have information.
Please PM if you want more elaboration on this subject.
I want to preserve the history of CS so this subject is important to me. It should also be highlighted as Valve has taken the fundamental elements of the map and adopted it in their Flying Scoutsman game mode for CS:GO. I think the original author should be praised for this creation.