Wow lost a LOT of money this year and they NEED to make it back again, unless you want to see blizzard shut down for good.
Why are you guys angry that they decided to go the cosmetic route instead of some harmful tactic like lootboxes or purchasable ingame advantages?
The Dread Wake, Vulpine familiar and now the limited bundle are a great things for the game, people love to buy this stuff, it doesn't hurt the game in any way and Blizzard is making money with WoW again. That's a win-win situation.
You should be glad they are trying this hard not to make the game tank.