Originally Posted by
Biomega
This is a general problem in fiction, where writing very often tends to gravitate towards "pretty much just human, but <insert one shtick>". The primary reason for this is that's it's significantly more difficult to write truly non-human races in a way that doesn't just lose the audience because they can't find a way to relate. Much easier to just make them all stand-in humans with one or a few divergent characteristics.
This becomes amplified in commercialized writing, such as WoW's - they want people to be able to engage immediately, without requiring them to think a lot, have background knowledge, or have a particular kind of engagement or investment; because that's much easier to sell. If your lore feels like you can't properly understand things unless you've played for 10 years and read fifty books, that's not good for sales. So everything is dumbed down, simplified for immediate and context-free digestibility, and effectively anthropomorphized at every level.
But even in more sophisticated fiction, it's far rarer than you'd think to find truly well-done inhuman writing. Even, say, the spider aliens in Vernor Vinge's A Deepness in the Sky, which are described in meticulous detail and given a lot of historical and sociocultural context over hundreds of pages, are at the end of the day "pretty much just humans, but they hibernate every few years and have particular thoughts about when to have children".
Added to this is WoW's inherent "faction problem", where their idea of a Orcs vs. Humans legacy translated into a Horde vs. Alliance mechanic has been systematically falling apart over the last decade or so, because it doesn't lend itself to the kind of complexity a living, growing world of multiple shifting narratives demands. They keep on pushing that idea for historic reasons, but at the same time try to have faceted faction identities - which obviously doesn't work, and only leads them to make laughable attempts at giving everyone a chance to do something, yet also wanting the recognition factor of constantly recurring characters and viewpoints.