1. All the yoga practitioners say that yoga is not a religion. If so how can there be traditions and lineage in yoga?"
5. is the so called tradition and lineage branding and marketing?
AG Mohan was the co-founded the Krishnamacharya Yoga Mandiram (KYM) in Chennai, India, and was its Honorary Secretary from its inception, in 1976, to 1989. Mohan was also the convener of Sri Krishnamacharya’s centenary celebrations.
With the Demise of Krishnamacharya in 1989 he left KYM.
AG Mohan is also well known for his books one or more of which you may well have on your bookcase, Yoga for Body Breath and Mind ,Yoga Therapy and the recent biography Krishnamacharya : his Life and teachings.
"Now my son, Venkata Desikachar and Mohanasarma, who are jointly studying under me, have attained this status of sathirthyas. Sathirthya means “studied under one Guru,” says Amarasimha. This gives me the satisfaction that I have not taught the shastras (the sacred treatise) to an undeserving person. Let one, two, or many students learn from one teacher about a particular subject, or varied subjects or shastras.
But what is special here is that Mohan has studied the Patanjali Yoga Sutras and its practical application entirely from me. He is competent to teach asana and pranayama suitable to each individual. He is also competent to teach the asana and pranayama portions of other shastras which he has studied thoroughly. He has studied the Samkhya philosophy in depth. In Ayurveda he has studied the important portions of Nidana sthanam (diagnosis), Cikitsa sthanam (treatment), Vimana sthanam (causes of disease), and Garbha sthanam (constitution of body)."