Aquinas is the authority on what the doctrine MEANS, not on whether it is true.
So, if somebody says that we hold that someone passes into the sewers, that someone cannot be the risen Lord, because we don't teach that about him.
Now, we may be quite as evil and deluded as you say. But we are not yet quite so lost as to think that we both officially teach a thing and teach its contrary.
So, whatever the truth concerning the bread and wine IS, the truth about our teaching — about what we teach, rightly or wrongly, is that the Real Presence only coincides with bread, and when the bread becomes something other than bread, the Real or substantial presence is not attached to that something.
So, I am not addressing the disagreement on the truth or falsehood of the dogma. I am saying that the dogma was misrepresented. If misrepresentation is not something we would want to try to avoid, that seems a funny way to walk in the way of Truth.