Not at all an answer to the question. I already knew at least 1 person had.
Unless you are suggestion you are it. Your "The One person". Obviously you are not.
(I won't stop talking about fflogs unless Square Enix demonstrate either that they want to protect fflogs by shutting me up on this matter specifically, or conversely start taking action to punish their use. This game is entirely about high-end raiding. Every, "every" high end raider I know uses fflogs. Yes some people here have said it ain't all that, but that's a minority. But I wonder if I looked whether I'd find they themselves uploading logs. You won't find me advocating their use. I see them talked about loads in this forum anyway.)