[Huinesoron]

Originally Posted by Morthoron

A return of Princess Xenarwen, with Galadriel wearing armor.

Originally Posted by UT: The History of Galadriel and Celeborn

Even after the merciless assault upon the Teleri and the rape of their ships, though she fought fiercely against Feanor in defence of her mother's kin, she did not turn back.

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Originally Posted by Morthoron

Hobbits where none should be.

Already cited by mhagain, but:

Originally Posted by HoME XII: Of Dwarves and Men

... when they are first encountered in the histories [Hobbits] already showed divergences in colouring, stature, and build. [...] In their unrecorded past they must have been a primitive, indeed 'savage' people...

The vague tradition preserved by the Hobbits of the Shire was that they had dwelt once in lands by a Great River, but long ago had left them, and found their way through or round high mountains, when they no longer felt at ease in their homes because of the multiplications of the Big Folk... This evidently reflects the troubles of Gondor in the earlier part of the Third Age.

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Originally Posted by Morthoron

Politically correct racial casting (Dark Elves, LOL!).

That's utterly beneath you, but:

Originally Posted by Tolkien's statement that all Quendi are light-skinned

(Quote not found)

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Originally Posted by Morthoron

Beardless dwarf-women.

This is the only one you're on anything like solid ground for, citing HoME:

Originally Posted by HoME XI: Concerning the Dwarves

For the Naugrim have beards from the beginning of their lives, male and female alike; nor can their womenkind be discerned by those of other race, be it in feature or in gait or in voice...

And also:

Originally Posted by LotR: Appendix A

[Dwarf women] seldom walk abroad except at great need. They are in voice and appearance, and in garb if they must go on a journey, so like to the dwarf-men that the eyes and ears of other peoples cannot tell them apart. This has given rise to the foolish opinion among Men that there are no dwarf-women, and that the Dwarves 'grow out of stone'.

But the HoME source (aside from being an unused draft to which Amazon don't have the rights) is sourced explicitly to Pengolod, an elf; and LotR Appendix F specifically calls the dwarves "secretive" (it uses "secret" five times in three paragraphs!), and contrasts this with the Elves. It's really trivial to suggest that maybe, like the "foolish opinion among Men" that dwarves have no women, is just an Elvish myth; and that when Gimli gave the text in Appendix A*, he was preserving the secrecy that surrounds dwarven women while being 100% accurate: when they go on a journey, they dress and act like dwarf men, to keep their presence a secret.

(*The first paragraph in Appendix A cites this to him, and implies he told it to Merry and Pippin; the term is "derived", so it doesn't even seem to be a direct quote.)

There are certainly things that could be a "debacle". But a fact which is explicitly stated to be the subject of rumours and misconceptions, and which is always sourced to specific people (rather than being in Tolkien's authorial/authoritative voice) turning out to be... a rumour or misconception, isn't one of them.

(It would be very pleasing to see Disa having to travel, and dressing herself up as a male dwarf to do it, to reach the precise meaning of the Appendix A claim.)

hS