Dwarf-phobia?

[Cúdae]

Interesting, I was really only looking at the History of Galadriel and Celeborn in Unfinished Tales and the notes that accompany it. Take this for example:

Celeborn had no liking for Dwarves of any race (as he showed to Gimli in Lothlorien), and never forgave them for their part in the destruction of Doriath; but it was only the host of Nogrod that took part in that assault, and it was destroyed in the battle of Sarn Arthrad. The Dwarves of Belegost were filled with dismay at the calamity and fear of its outcome, and this hastened their departure eastwards to Khazad-dum. Thus the Dwarves of Moria may be presumed to have been innocent of the ruin of Doriath and not hostile to the Elves.

So that explains Celeborn anti-Dwarf feelings (although he is holding a grudge against all the Dwarves when most aren't even the race that deserve it). And it explains that the Nogrod Dwarves and the Belegost Dwarves were not close kin.

You can find that little quote on page 246 of the Del Rey paperback edition of Unfinished Tales. It is located in the History of Galadriel and Celeborn in the section entitled "Concerning Galadriel and Celeborn."