Jeez, 5 pages of utter confusion. So many experts with so little knowledge.
I agree. If there were legal precedent then perhaps we would have a direct answer but as usual this stuff is poorly written and relatively open to interpretation.
I think this would only ever be an issue if brakes were added to a car and an accident report concluded that the brakes were in adequate or unsuitable for the vehicle they were attached to and therefore caused the accident...that's just a guess though...if you had an accident and it was nothing to do with braking performance then I don't think an insurance company would be able to invalidate a claim on that basis.
For me and the documentation above I would be reasonably comfortable to have HSV/Redline brakes added to my VE SSV. Others might not be.