The top button which fastens the collar on a dress shirt should only be buttoned when wearing a tie. It should not constrain the neck when buttoned - if so, you are wearing the wrong size collar.
I don't know what Bubba is doing with his polos, but that top button is just for looks, not for buttoning.
I don't know what Bubba is doing with his polos, but that top button is just for looks, not for buttoning.