[Mick]

My opinion is that people in one profession (that happens to make them well known) are not necessarily someone to trust about guidance in other fields.

You could frame this for any profession.  Sarcasm alert: Nothing gives me greater joy than to hear a lawyer talk to me about marketing/sales (my field for 30+ years).  I wouldn't think of drafting a contract, why do they tell me how to do my job?

[Mick]

My opinion is that people in one profession (that happens to make them well known) are not necessarily someone to trust about guidance in other fields.

You could frame this for any profession.  Sarcasm alert: Nothing gives me greater joy than to hear a lawyer talk to me about marketing/sales (my field for 30+ years).  I wouldn't think of drafting a contract, why do they tell me how to do my job?