oh wow. what a little "gem" this is.

i will let others comment on his knowledge of taoist practicies, as these can be fairly wide in scope and unique in practice. suffice it is for me to say i dont know the aim he is shooting for here based on what is shown in his videos.

now, on the taijiquan principals... well...
to practice what is shown, at least on the videos, may help loosen joints and provide a softer set of warm-up movements for the elderly to help cope with stiffening joints perhaps. but nothing i saw indicates an ounce of understanding of such fundamental concepts as double heaviness.