This thing has more advantages than disadvantages. It's nothing. What does it matter to be an excellent league member? At least you have this certificate when it is useful, and others don't. Just don't take it out sometimes.
But I think it's still useful. Introducing yourself, organizing student elections, writing resumes and adding an excellent league member are really different. I don't know why you shouldn't comment on going abroad and doing academic work. I really can't figure out how this certificate can hinder you.