You claimed this:
Your claim was then easily disposed of because it was almost entirely bogus. You said nothing about whether they were visitable or not, although if you had that would've been readily dismissed too. Only the Vulpera and Mag'har lack capitals, although for the Mag'har you could just go to BC Nagrand. Whether you consider them to be insignificant is irrevelant when the fact of the matter is that every race, with the exception of the two aforementied allied races, have a capital. All these capitals are available to visit in game, even if some require the aid of a Bronze drake. Two of them are instanced content which does suck, but I don't see Gnomeregan ever being featured outside of the dungeon when New Tinkertown is also a thing. Gilneas could make a comeback, but just like with Night Elves or Undead recieving a brand-new capital at the expense of content for people who don't play those races, I don't see it happening any time soon.
Pretty sad that you have to resort to dissing the locations instead of admitting you goofed. Bilgewater is a city, and a harbor, and most importantly the capital of the Horde-aligned Goblins of the Bilgewater Cartel.