I tend to disagree with the title anyway

. This list seems suited more for someone who wants to know enough to understand white papers and attend conferences. If you want to be a cryptographer and actually design or break algorithms you would need to know a great deal more about mathematics and computer science than what is present on that list.
Additionally if you are or work for a cryptography company the 53rd thing you should know is not to
post crypto challenges on forums, and then assume your algorithm is secure when no one attempts it. (Sorry couldn’t resist)