I agreed with the OP/blogger. XIV:ARR focus too much on execution or rather just dodging of instant kill mechanics. Given the similarity or the idea of this game is build around WoW. WoW itself have more then one kind of execution to avoid instant KO(Stack on tank during certain move, Spread out, click this) and more variance of boss mechanics then XIV:ARR has(e.g. Look at Ulduar)

P.S. IMO(Just mine really!) using XIV:ARR is a new game and similar excuses does not excuse it from the lackluster content or boss mechanics it provide for the audience given that XIV:ARR is not a new IP from SE or is it the first time SE is doing a MMO.