Did you forget why Zoro needed the Minks' medicine? He stopped one of One Piece's most stupid attacks saving the day, if the battle had ended there.
And yes, without the medicine Zoro couldn't have kept fighting, but enough had already been done.
On the other hand, Sanjhi without the exoskeleton would be a dead weight or even Luffy without the G5, Law and Kid without their alarms...
Things are as they are, accept it and stop crying.