Read the scan again, it says MY real eyes. Izuna's eyes are not Madara's, they are Izuna's are they not? A spare he had implanted afterwards could refer to Izuna's eye being the spare. Madara had both ems during this fight so a fake being used during the fight is out of the question, he used Izanagi on Izuna's eye. Lol at people who think that Kiahi has no ability to foreshadow i.e. hashi looking at the cliff. 2 years isn;t very ling in manga time, i'm sure Kishi knows what he was going to do here.
let me explain the ways in which you are full of it:
1. Madara was in fact, referring to the EMS eyes he had that evolved into the Rinnegan as he confims the claim that Nagaot was bequeathed Madara's Rinnegan eyes.
2. The moment Madara transplanted Izuna's eyes onto his own meant they were one in the same from that day forward.
3. The obvious bull in your post being how Madara is supposed to use Izanagi on another person's eye that was already conjoined with his own. As mentioned in #2, the 2 eyes were one in the same so how the hell does someone use Izanagi like that? It's just a straight garbage theory, and the worst and funniest part is that you're actually trying to convince me that is a fact that can't be debated just because you have convinced yourself of that. Throwing around Kishimoto's name like he already had this prepared is lulzy, and even if he did it just makes him look worse because there's too many ways one can dissect the number of faults in the explanation.