You will soon learn that these so called Fidelity reps have NO idea what they are talking about. I've deal the such matters and I know the difference between and Chill and Global Lock. With the latter, NO BROKER would trade the securities. Please check the facts for yourself.
Trade at your comfort level and manage your risks.
"Dilution" and "R\S" are overused. They have become ineffective, because folks are desensitized!