***spoiler Warning***

[Elmo]

I think it really comes down to if you think Tolkien has followed what Finrod said to Andreth

'As may a master in the telling of tales keep hidden the great-
est moment until it comes in due course. It may be guessed at
indeed, in some measure, by those of us who have listened with
full heart and mind; but so the teller would wish. In no wise is
the surprise and wonder of his art thus diminished, for thus we
share, as it were, in his authorship. But not so, if all were told us in a preface before we entered in!'