lol. This is the most classic example of a slippery-slope fallacy.
Tbh, WoW is slippery-slope in action.
Hero class anyone? No more grind, just start the game at 55!
Quests for Epic class mounts "too hard"? No problem, just buy them at 61! (Note, you will need TBC ($$$) to buy your class epic mount rather than quest for it.)
PvP gear too hard to come by? No worries, old season gear for free, no matter whether you win or lose, we will give you honor and marks anyway, heck, be idle and you will be rewarded.
WotLK Epic flyer quest too hard? No biggie, we will nerf the quest PRIOR to release, just buy your epic WotLK flyer at a vendor.
... and so on, and so on.