i am not sure, but i think that this wrapper attributes are for backend only.
with that you can stile backend.
because at frontend you can easy wrap your field for example by a class & by blockquote with code like this:
$my_quotetext = get_field('my_quotetext');
echo '<div class="my_quote">';
echo '<blockquote>';
echo '<p>'.$my_quotetext.'</p>';
echo '</blockquote>';
echo '</div>';
there is no need to add wrapper at backend before
