Yes the tried (and props to them for that) but others have also done tasks and not been able to complete them and proceed to either never give up or make their way to the Pit Stop and face either elimination or a penalty from hell.
But in competition you don't quit. I would respect them more to walk to the Pit Stop and face the Philinator.
To Quote the Family Edition, quiters never win, and winners never quit. Even when you are the losers, you still are winners.