Does CG location affect the stability of the Dassault Falcon 7x while on the ground?
2% weight on nose wheel sounds plausible.

Almost all weight of an aircraft must be on the main wheels. Otherwise:


the elevator would have to be huge to generate enough force to lift the nose wheel off the ground on take-off and
on landing as the main gear contacts runway first it would create strong moment that would slam the nose into the ground.


See also Why do planes always land on rear wheels instead of the nose wheels?.

I've seen values like 4% weight on the nose wheel, so 2% for CG at aft limit makes sense. It is still enough to keep the aircraft level and leave some efficiency of the steering.

And yes, loading mistake can make an aircraft tip over on the tail:



(copied from this answer; original source)