I was wondering the same question. Though i don't have the Sharingan, i believe Kaze still counted me as an Uchiha on that list. If anything, i think it should be changed, to Kekkei Genkai, and not clans. There are Uchiha who have never awoken the Sharingan..
This would also be good for people doing transplants, seeing as if someone gets a Dojutsu transplanted, they'd have that Doujutsu, and they'd be put on the list of those with it, adding to the number. Even if just 1 eye. It's a good way to keep people from dieing, transplanting eyes, then bringing in even more pure bloods.
But yea, Sharingan needs a smaller limit. The rest could probably be expanded a little seeing as they don't get much attention anyway.