I have come to a point where I believe no matter how much of an expert you are in any field; you will be challenged by people who know less than you know.
For whatever reasons that tickle their fancy.
If you are a lawyer? They are better in law than you. If you are a doctor? They are better in medicine than you.
People employ all sorts of experts – lawyers, doctors, accountants, engineers, actuaries, architects, can I add brand consultants? But they will choose to be more of an expert than the people they pay good money for.
If you understand, things are just as they are; if you do not understand, things are just as they are. – Zen saying.