mikehall12382- What Mod 80 is likely saying is twofold. Firstly we firmly believe that all knowledge is in the Torah. Learning full time and in depth will give someone knowledge in all areas, not just in “Talmudic studies”. This knowledge is pure, unadulterated truth.
An MO Rabbi who might not spend most of the day learning Gemora, Rishonim/Achronim and is not familiar with all 4 parts of Shulchan Aruch, will need to obtain this knowledge from other sources to be successful. This knowledge is often tainted and biased and may reflect itself when he gives advice. There is a big problem with a Rabbi trying to help you using Freudian psychology and not the Ramchal, Rabbeinu Yonah, Rambam or Kuzari.