Something about the lore of the Night Elves and Blood Elves has always felt a bit contradictory to me.
Night Elves often criticize the Sunwell and argue that such a powerful arcane source is dangerous and could threaten the world. From their perspective that makes sense because the original Well of Eternity played a huge role in attracting the Burning Legion and triggering the War of the Ancients. The trauma from that event shaped their entire culture and their distrust of large concentrations of arcane magic.
But when you look at it from another angle the argument starts to feel inconsistent.
The Sunwell is treated as this massive risk that should potentially be shut down, yet the Emerald Dream continues to exist and has caused repeated disasters throughout history. The Dream has been corrupted multiple times, the Emerald Nightmare nearly consumed parts of Azeroth, and threats coming from the Dream have appeared again and again. If we were simply counting the number of times a magical realm posed a threat to the world, the Emerald Dream would probably rank higher than the Sunwell.
Yet the Night Elves never argue that the Emerald Dream should be sealed away or destroyed. Instead they dedicate entire orders of druids to protecting and maintaining it.
The difference seems less about actual risk and more about ideology. To the Night Elves arcane magic represents the arrogance that nearly destroyed their civilization, while nature magic represents balance and the natural order of the world. Because of that they view the Emerald Dream as something sacred that must be protected, while they view the Sunwell as a dangerous reminder of the past.
From a lore perspective this actually makes the conflict between Night Elves and Blood Elves more interesting. It is not purely about what is objectively safer for the world. It is about history, trauma, and two cultures that chose very different paths after the same catastrophe.
Still, when you look at the number of crises tied to the Emerald Dream, you can understand why Blood Elves might raise an eyebrow when Night Elves start lecturing them about the dangers of magical wells.