How would that give players that use Macros an advantage. It's in the game for everyone to use . Its not like macros are external tool like parser. There even a guide for it in game.
Thats like saying get rid of crafting classes because it provides a unfair advantage to people who took the time to level them, or lets get rid of chocobos becauase its unfair to those people who didnt take the time to do the quest.
that's a bad excuse . It only takes 5 mins to learn how to use them.