What's your point?
They are "clever" (quick to learn), "resourceful" (creative), and are no longer forced to use their "smarts" on surviving as slaves in the desert, because they are free and have the support of the Horde. You're trying to box them in here, but their description directly contradicts your claims.The exact same reasoning you're using to discount blood elves also applies 100% to the vulpera: the vulpera "smarts" are more "savvy-ness" regarding survival in harsh conditions, not developing and building high-tech machinery.
Blood Elves aren't interested in technology, because they are dependent on and surrounded by magic. For them, magical affinity is inevitable, but that is not true for vulpera. So naturally, vulpera will make the most of the tools that they can find.
It's an archetype people are familiar with that has a low production cost due to sharing animations with goblins. These are both beneficial things. Having a high production cost wouldn't count them out, but claiming that a low one doesn't improve the chances of something being implemented into the game is nonsense.Sharing a skeleton with goblins has zero weight as an argument.