Most of us would not take, nor recommend taking, legal advice from someone not licensed to do so.
But many of us often do take general life advice from people (family, friends, co-workers) not necessarily qualified to do so. We take relationship advice from those hopelessly single. We look for motivation from people who deep down are afraid. We seek inspiration from those who actually lack courage. We look for support (say, in leaving the law) from those who really yearn only for security.
Familial ties, longstanding rapport or respected authority does not always guarantee the most suitable advice . . . for you.