You couldn't be more wrong and backwards. It's the people who believe it's not dying that are not looking beyond the success of their server.
Here is what you need to do to compare the numbers. Measure the number of 10 vs 25man guilds that downed normal LK and heroic LK before Cata... then Measure the number of 10 vs 25man guilds that have downed normal and heroic Madness.
When you compare those numbers you will see that the amount of 25man guilds dropped dramatically from Wrath to Cata once achievements, loot and lockouts were all shared.

MMO-Champion


But then again hard to have a 40 or even 25 man guild when Blizzard won't move a finger to revive dead population servers because they rather have cash form people being forced to transfer.
