DF withdrawl has become the new "Fatigue" system
FFXIV 1.0 originally had the notorious fatigue system, where experience earned for a particular class would slowly deplete to nothing after eight hours, and required a week to fully replenish. I believe the idea was that it would modify player behavior, encouraging players to ration time played as any particular class. From the player perspective, it felt like a punishment for playing.
Now we're being punished for trying to participate in an instance! If you or your a party member can't click in on time because you forget to use /readycheck, 30 min reprimand! Or because you changed class to participate and hunt or battle... or because you forgot to deselect a previous duty... the controllers dies, the call of nature, a crying baby, a misbehaving pet or any other one of the things that happen in life, regardless if it's your life or a party member...
I do not understand why this was added. People generally don't queue the duty finder, wait a few minutes and click withdrawl over and over again. When a player queues for a duty it's because they WANT to participate in one. I mean "DUH!". And I see no evidence this has had any impact on the number of withdrawls...