I think there’s been some level of miscommunication, so I’ll try to state it another way.
Night Elves are basically described as the “best” race. They’re the beloved children of the only known true deity. They’re strong, agile, intelligent, wise, magically gifted, and blessed with longevity. That’s basically their description on sites like Wowpedia.
Unfortunately, that portrayal is unsustainable within an MMORPG, because it means Night Elves would basically be the “I win” button. That’s simply saying that for the game to function, Night Elves can’t be overpowered.
My comment was that Night Elf players tend to become upset when their portrayal within the game doesn’t match their racial description. What value is it of being the one chosen race, if that deity doesn’t help them? What value is it of being extremely agile, if somehow Horde rogues can overcome that? What value is it of being magically gifted if it can be overcome by an Archer and a blind throw of an axe?
The storyline deviates the Night Elf portrayal from the racial description sometimes to help move the story along. This seems to upset Night Elf fans. Often though that doesn’t come with the recognition that if the Night Elves were constantly portrayed to match their own backstory, every other race would be nothing more than a footnote.
Some of the complaints regarding the entire Horde army marching to Teldrassil is that the Night Elf forces and city guards should’ve slaughtered them in the forests. Why? Well, from their description they’re better, strongest, faster, smarter, wiser, magical-er, spiritual-er, forest-er, etc. And if you read their Wowpedia page - yeah, why not? 8x as many Horde should’ve been a pretty easy kill. But from a gameplay perspective, that is terrible.
They could try retconning in something akin to, “Oh, they’re really not that smart, in fact they’re basically only smarter than Orcs, but they wrote their own Wikipedia pages to say they were smarter.” Or they could introduce a plague that physically weakens them so they aren’t nearly as strong and/or as agile. Apparently they decided to try lessening the whole connection to the only known true deity.