There is indeed miscommunication, but often much of it is intentional. There are occasional complaints such as a Night Elf being caught by surprise by a shredder, or other situations that elicit knee jerk reactions. But realistically not every Night Elf will be a perfect soldier, and even the most experienced ones can trip and fall. That one Night Elf does not make the best showing in one moment in time is not reflective of the entire race.
While the are plenty of doomsaying Night Elf fans running around falsely screaming about how Blizzard hates Night Elves and wants to make the race go extinct, very few ever actually complain that the Night Elves aren’t powerful enough.
These fans might complain that they wish the Night Elves had driven the Horde off and prevented Teldrassil from being burned, yes. But usually these sentiments align more with ideas such as the Night Elf army and/or Tyrande actually having been allowed to be present for the War of the Thorns. The requests are not often that the civilians should have been able to not only slow the entire Horde by themselves but also easily crush the Horde through their mighty innkeeping and tailoring skills.
No, it is often anti-Night Elf fans that make these kinds of statements on behalf of Night Elf fans to create an argument actually intended to indirectly try to declare the Night Elves as weaker. Much in the feigned attempts made in this thread to portray Elune as weaker when there’s no need for it.