Even if she did use an earpiece, it would show she was LISTENING to someone. Trump would never use an earpiece because it would show he occasionally listens to someone besides himself. (But what an absurd thing to consider a criticism at all: Even if she had one, Clinton presumably used the earpiece to make sure that she got her facts right and that she heard the moderator. Walter Cronkite also used an earpiece; it is visible in many of his TV recordings. Did that make him less believeable? )
Even if she did use an earpiece, it would show she was LISTENING to someone. Trump would never use an earpiece because it would show he occasionally listens to someone besides himself. (But what an absurd thing to consider a criticism at all: Even if she had one, Clinton presumably used the earpiece to make sure that she got her facts right and that she heard the moderator. Walter Cronkite also used an earpiece; it is visible in many of his TV recordings. Did that make him less believeable? )