The differences between what Paul Grilley developed and called Yin Yoga around the year 2000 (which I will call Yin Yoga PG) and what Paulie Zink has been teaching and only started calling Yin Yoga around 2009 are stark. (I will call that Yin Yoga Z.) This history is described elsewhere in the forum under the thread
Who owns Yin Yoga. No need to duplicate all that here.
As to Paulie's latest video, Yin Yoga (PG) was never offered or created as a subset or introduction to Paulie's Taoist Yoga (or Yin Yoga Z) and the fact that Paulie changed the name of his practice to the same name that Paul was using does not make Paul's practice subordinate to Paulie's. This would be akin to an Ashtanga teacher changing the name of her offering to “restorative yoga, and then criticizing restorative yoga because it doesn't have advanced postures, or because it is not based on vinyasa, or because it doesn't lead to further series. They are two very different practices with different intentions. So, too, for Yin Yoga (PG) and Yin Yoga (Z).
Cheers
Bernie