Indeed
A race is not a hive mind - but even a hive mind there are anomalies who are cut off, thrown out to not disturb the Harmony - and players and individuals (I dare say, they are even unique in some cases)
Every class - even the Demon Hunter - is not something you born but learn and train
The Demon Hunters are somewhat unique because Illidan only trained Night Elves first, then a few Blood Elves, but it is just that. Traning and a ritual, to summon, slay, and bound a Demon’s soul in to yourself, harnessing its power that slowly drives you mad and mutates you, makes you a half-demon, then a full Demon in time - it is the poor man’s Grimoire of Sacrifice, self-deception, you are not a Warlock (in a sense true, you are not, you were not even capable to master the basic levele subjugations and power theft…)
Whatever
The point is, even Demon Hunter is a class you have to learn to be born in to
I say, the most, you could born with affinity (except the Death Knight, but that is for everyone, Death is not that picky, anyone could be raised with sufficiently strong necromancy, even species normally immune to such thing)
Affinitiy to use Magic, affinity to Natrue or the Elements, or to be a good fighter, keen eyes to be a hunter, etc.
But there is nothing, especially in the lore, that would prevent you to become any class except, maybe the given race’s culture and traditions or prejudice when it comes to some classes.
But again, the palyers are individuals, maybe a million Kaldorei hates, with good reason Arcane and Fel, but there is always one who wants more, who want to learn, heard stories and looking around the ruins and burrows decided, okay maybe having an advanced empire covering most of the continent maybe, just maybe wasn’t that bad… and I will be different! Or after the Demons mass murdered her family and friends had enough and decided will make them pay, make them serve, use them and I will be different than the ones failed before me, because… it is ME! And become a warlock because always skipped leg day and she is weak in body, but strong in will
Nothing like a good old hubris or thirst for power to become something forbidden (and in a wartorn world that faces world ending threat in every 2-3 years, anyone or anthing with power probably and logically is welcomed and begrudgingly tolerated)
Priest, hunters, rouges, warriors, holly warriors of your dety? Every culture have them just sometimes called differently
Everyone lost if because of the Tauren rogues forgeting:
A, they were already in the game, just like the Draenei Rangaari not playable for some reason
B, be a scout, thief, a pirate or an assassin posion master, or embracing the art of shadowy practices is nothing special
C, moving around silently with hooves and large body is a thing even in nature, kind of part of the survival kit if you don’t want to be eaten
D, most of the rogues invisibility and silent movement and speed comes from magic…