I believe you are mistaken.
My apologies for the gender confusion. As far as the John passage, you and others repeatedly offer it as a standalone, “slam dunk” proof-text for transub. As such, you are obligated to take all of Christ’s words in the passage at face value, without qualification. If you’re not willing to do that, please be intellectually honest enough to admit that you can’t then turn around and use it to prove transub.