I like what the guy is advising, however not everyone has close friends/mentors, etc. in their life that can really weigh in in those things.
But overall I would say it is definitely important to get a third-party opinion (and gather as many as possible, but from trusted sources) for:
Where there is no counsel, the people fall;
But in the multitude of counselors there is safety.
[Prov. 11:14]