Some outdoor content journeys are always in the game and those are reflected via some cosmetics, like the Nazjatar meta achievement:
Or other meta achievements that are part of “Back from beyond”.
The problem with this achievement isn’t only the RNG element from abomination factory but the implementation, Everyone knows that KSM, CE goes away once the next patch / expansion launch or that the Heroic mount from the last boss of the expansion goes away with the next expansion launch, every mount from mythic changes from 100% to 1%; however, Players didn’t have a clue that a world content achievement will receive this kind of treatment until it was too late for some players, even worse when the content was split into 4 covenants and their respective buildings and features.
If we’re going to have a similar achievement on DF, it should be announced with a proper amount of time, it should be a goal for any player to target. I got luck that a lot of the requirements were related to mount rewards, but I don’t want to check every achievement on DF thinking if that will be required for a limited time achievement later, so I must do that achievement now. Some players have a different pace to approach goals.