It seems the Standards for Yoga Teachers used to be somewhat higher!

Quote

IMG_2764“[The teacher] is one who is endowed with the power of furnishing arguments pro and con, of understanding questions and remembering them, who possesses tranquility, self-control, compassion and a desire to help others, who is versed in the scriptures and unattached to enjoyments both seen and unseen, who has renounced the means to all kinds of actions, is a knower of Brahman and established in It, is never a transgressor of the rules of conduct, and who is devoid of shortcomings such as ostentation, pride, deceit, cunning, jugglery, jealousy, falsehood, egotism and attachment. He has the sole aim of helping others and a desire to impart the knowledge of Brahman only” (Śankarāchārya in Upadesa Sahasri).