I don't mind them on Krynn -- but then I tend to take stuff on its merits rather than demand it comply with a set of narrow tastes -- but the idea took on a life of its own outside, perhaps because the gimmick is quicker to grasp than Gary Gygax's badger-loving hill people or Ed Greenwood's Forgotten Folk, which fit their respective settings much better. For instance in the Realms, some people saw that Gond had to do with machines, and tinker gnomes had to do with machines, and Gond was worshipped in Lantan, so deducted falsely that there were lots of Lantanna gnomes.