I'm still not sure what you point is here. Sorry. I don't think anything I've written is misleading anyone. It's sounds more like you are just picking... although I'm not sure of your motives.
I've not really studied the "real presence of Jesus in communion", so I cannot comment on that.
I think you are forgetting where the "church" gets its truth from, which is the inspired word of God. Sure, the church "upholds and supports" the truth of God, but the truth of God is in the Scriptures.
The Scriptures "complete" us and can make us "perfect"...
2Ti 3:16 All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness:
2Ti 3:17 That the man of God may be perfect, throughly furnished unto all good works.
The Scriptures are all we need...
2Pe 1:3 According as his divine power hath given unto us all things that pertain unto life and godliness, through the knowledge of him that hath called us to glory and virtue:
The Scriptures set us free...
Joh 17:17 Sanctify them through thy truth: thy word is truth.
We are added to the church...
Act 2:47 Praising God, and having favour with all the people. And the Lord added to the church daily such as should be saved.
This is all pretty simple to understand.
No doubt that the nothing will prevail against the church.
If every Christian went totally apostate, it would not make the Bible any less true than it has always been. I'm really not sure where you are trying to go with all this. Sounds like babble to me.
Sure there are tons of interpretations, but only one is right.
Here is a thread on interpretations if you would like to make some comments.