As to point seven, Jerome may have questioned the deuterocanon but - as the argument itself effectively admits - he was overruled by the majority. Neither Cyril nor Athanasius rejected the deuterocanon - this claim appears to be newly invented. Origen may have, but Origen has never been accepted by East or West as an orthodox Father because of his many bizarre opinions - including the advisability of self-mutilation and his belief that the Devil would be saved.
There was NO closed canon until Trent.. prior to that different countries had declared different books as canonical at various local councils ..there was no agreement on all the books until Trent