I do have a reason myself to want Sora be deconfirmed (probably not the same reason you have, lol), and it's simply because if it's not Sora, I rather know NOW and move on from it, rather than get disappointed during TGA event… specially after all this teasing I've been going through lately personally with: NO ONE deconfirming him yet, and KH having a most likely big pressence at TGA instead of jump festa (by this i mean KH hasn't been confirmed for jump festa's schedule that Gematsu just put out recently, but FF7R new trailer was confirmed in that schedule instead, so that most likely means KH3 DLC trailer that was promised for december MIGHT be at TGA instead then, just an assumption of course, based on this info we know so far).
I really wish i could say "no sora" already and be at peace myself, if someone would just deconfirm him already, but so far, no one has
(he could be deconfirmed any day now, we still got days to go, lol).
Edit: Typo "no" to "not" in the parentheses near the start.