I never said humans weren't unique.
In a roundabout way, you absolutely said they weren't unique. I'll even use your own words:
blood elves have a degree of their own culture
Can the same be said about humans? Not really.
This implies that humans have little or no "degree of their own culture", which is backwards way of saying they're utterly bland.
What I AM saying is that high elves are not unique at all. There's nothing that I can see about them that states "this is what makes a high elf" other than blue eyes, white skin, and long ears.
They have been humbled, whereas the Blood Elves haven't.
They have remained tempered, whereas the Blood Elves haven't.
They continue to uphold an ancient morality whereas the Blood Elves don't.
They foster friendships and accrue loyalty, whereas the Blood Elves begrudge alliances and avoid commitment.
This all without even having to delve into any lore whatsoever, just going off what the casual player can view IN-GAME while perusing through Outland or Northrend.
Gnomes, dwarves, goblins, trolls, and even worgen at least have things that sets them apart from all the rest. Your argument is invalid.
It's only invalid if you refuse to see differentiating facts as facts.
I could tell you that the Atlantic Ocean and the Pacific Ocean are different due to composition of elements and you, with your mindset, would posit that they were not different at all because they're both blue. At best, that makes your opinion childish.
Considering you just failed at reading comprehension you really have nothing to do but insert your foot in your mouth and suck on it for a while.
I think it would be more apt to say you've failed at recollection of your own wordings.