The one who identifies himself with religion and identifies himself as god men,swami guru or yogi is not a Gnani.

Yogi shuts his eyes the world confronts him and then has the temerity to declare that it knows the world to be Brahman! Because he has not inquired into it, he knows nothing.

Yoga helps the yogi by giving him the feeling that the world is not worth bothering about, it detaches him from world; it makes him treat the world as a dream. It does the same to his ego to some extent because he becomes indifferent to what happens to him. But this is only feeling, he feels these things only but does not know that the world is mere mirage. Such knowledge can come only after soul-centric inquiry and in no other way.

That is why yogi cannot be Gnani. It is the difference between feeling and knowledge. Feeling of the yogi that the world is unreal may change tomorrow because all emotions are liable to change; and the fact is that yogis do change, as when going after women they lose their sense of world unreality though previously they felt it.

A permanent view of world as unreal can come only after soul-centric reasoning; such knowledge cannot change. Were the seeker who is sufficiently sharpness he could grasp the unreal nature of the world by soul-centric reasoning alone.  To know whole truth, one must know the whole universe, otherwise he gets only half-truth.

Sanyasa is not the means to acquire Self-Knowledge or Brahma Gnana or Atma Gnana.  Renouncing the worldly life and accepting sanyasa or monk hood means incapacity to think deeper, an impotency to inquire and reason.

Sage Sri, Sankara's commentary:-

Page 489: "The knower of Brahman wears no signs.  Page 500 asks in effect "Tell us what you know, show it, and let us examine it under the mental microscope." It means we must bring notions and beliefs out of vagueness into clearness. It also criticizes the mystics who claim superior knowledge but who cannot communicate it for purposes of verification.

On page 482: On Gnani: "The knower of Brahman wears no signs. Gives up the insignia of a monk's life,…his signs are not manifest, nor his behavior." 

The one who identifies himself with religion and identifies himself as god men,swami  guru or yogi  is not a Gnani because Gnani is fully aware of the fact that his body and his ego and his experience of the world are mere mirage created out of consciousness.