Correct me if I am wrong but the only two expansions which had a major presence of Horde over the Alliance are Cata, where Thrall becomes the world shaman, and Warlords of Draenor, kinda, where you have mostly an orcish presence over other races.
WotLK, MoP, TBC, and many other expansions were fairly balanced. I will say balanced, even if technically speaking a lot of neutral factions feature a lot of Alliance-looking characters: Tirion’s Argent Crusade, Darion’s death knights, Dalaran’s human kingdom, and so on. With maybe Mist of Pandaria giving a tad too much spotlight to the Horde, it never stopped creating arcs for the Alliance (even if disliked by some): Anduin’s journey, the Alliance finding its unity again, and so forth.
Legion again gives the spotlight to Alliance races, with Horde races fading in the background in the later patches. Then BFA seeks to represent both groups, once more, with the faction conflict. We can try to claim Sylvanas and Saurfang had 10% more screentime or whatever we want, but the story spoke about both groups.
All of this without even mentioning the narrative found outside of the game, such as with Varian’s WoW Comic.
Anyway. My point is: while some expansions have seen more spotlight given to either faction, since Shadowlands, we really haven’t had any focus on the Horde outside of Lor’themar and Thalyssra’s marriage. I don’t care a lot about “muh Horde!!”, “muh Alliance!!”, but claiming that there have been
seems a bit unfair.
Before it was very much a give-and-take towards both groups. People wanting to have a presence in the story - even a minor one - does not seem too bad to me.
I have found out that the hardest thing to digest about night elf content, most of the time, are some elements of their fanbase.
Speak with this guy and then understand why people make fun of night elf posters.