False. I used to clone my Pokemon loads back in the G/S days, but for some reason it never occurred to me that I could equip the Pokemon with things such as a Master Ball or rare candies to get multiple of them. Usually I'd just clone my strongest Pokemon and make a full team of 6 with it, since somehow that was a reliable way of beating my friends whenever we did link battles 8D But yeah, I never realised that you could clone items as well until a friend of mine did it in preparation of catching an Entei. But that was at the end of the G/S/C popularity's lifespan, so I never really put that new knowledge to use D:
TPBMHN gotten stuck on something they later realised to be super obvious within the Pokemon games.