If you are seeking truth nothing but the truth then you must not get stuck to any Guru or yogi. Those who are seeking the truth need not follow any Guru or any teaching.
Yoga Vasistha says:~ Self-knowledge or knowledge of truth is not had by resorting to a Guru (preceptor) nor by the study of scripture, nor by good works: it is attained only by means of enquiry inspired by the company of wise (Gnani). One’s inner light alone is the means, naught else. When this inner light is kept alive, it is not affected by the darkness of inertia.
There is no need to condemn Gurus, but there is need highlight how they become an obstacle in realizing the ultimate truth or Brahman.
Swami Vivekananda said: ~ “You have to grow from the inside out. None can teach you, none can make you spiritual. There is no other teacher, but your own Soul.”
The Guru is useless so long as the ultimate truth is unknown, and Guru is equally useless when the ultimate truth or Brahman has already been known.