There is only ONE type of people I ever saw complaining about this: people who came from WoW and were pretty much used to the keyboard mashing a 1s GCD combat is, then came here and found the combat "slow and clunky".

Thing is, they LIKED to mash buttons non-stop during combat, I figured it gave them a sense they were playing an action game instead of an RPG. Well, to each it's own, but after playing (and raiding in) WoW for 8 years, I don't miss AT ALL the 1s GCD.

You people just like doing this