I think I get it A-friend. You're beginning to learn a lot about this industry which myself and Deeds already have nailed down. You play devil's advocate accidentally sometimes and that can be misconstrued as advocating GMs.
In the end I think you're slowly beginning to see the light and the truth about GMs.
I will add this. We, the experts, also misuse the term GM. But we are knowingly doing it. It's just easier to use that term, and helps decipher between straight up swap meet lookin sponge bob replicas that cost 80 bucks, and these "very close replica's" we are seeing.
When we use the term GM, we don't actually mean GM. Zyzz is right...GM started when a few pairs would leak out the back door. We now have crossed that term over into a more broad usage, while admittedly incorrect. They are just high quality fakes. We use the term grey market in reference to these high quality fakes that end up on sites like Mental Kicks, Marqueesole, etc. But in actuality...they are indeed, fakes.
I will not deny that there is a possibility that these bootleggers are able to get their hands on materials that are identical, or very close to the real thing. Other times, they get materials that are obviously very far off from the real thing. They slap all that crap together, and you get your "shoe".