Tanks have an easier time than anyone else at this. Not everything in the game is fair.
And there’s no issue whatsoever with any “secret challenge” being something of a gear (or skill) check. If it were actually the case that you needed a specific covenant ability to do this, that would be an issue—but you don’t. The fact that Night Fae have it a bit easier than other covenants isn’t any different from tanks having it way easier than anyone else.
How is that unfair but having gear checks in mythic raiding it’s not?
Just get better gear/wait a few months/level a tank
What I don’t understand is why the Voidwalker doesn’t seem to hold agro when you choose the Affliction spec or Destro spec. Demo is the only spec that you seem to be able to have a pet tank which is unfortunate because I seem to be able to do MUCH more dps in either affliction or destro. I would think this would fix many complaints on how this is too difficult for Locks to complete.