Kinda understanding it if the leader really does zero for the group but as fans I doubt we would really see everything about him. A leader can be quiet and a good leader too. Maybe he pushing the other members forward to give them attention? This person really doesn’t like the leader at all saying how he isn’t good at anything.
Shinee actually said thats what make Onew the best leader
Instead of pushing himself to the front, he is supportive of all of them from behind.