That's a slippery slope argument, which may not be fallacious, not all are.
If we accept that Hof and Nestor have "appropriated" these techniques then the next question would be how has that led to the blocks you've outlined? When will I lose access to the authentic teachings?
> are we so sure that Patanjali et al would feel about that one group claiming ownership and only allowing that group to access it?
I reckon he'd be against it as Patanjali et al seem more focused on sharing the knowledge in order to benefit others but who's to know.
> Perhaps Patanjali didn't try to trademark/patent (or the equivalent) their techniques because they were morally opposed to this?
I think this point has been covered but I'll add that I've not noticed any form of communism in the system of yoga Patanjali systematised.
If we accept that Hof and Nestor have "appropriated" these techniques then the next question would be how has that led to the blocks you've outlined? When will I lose access to the authentic teachings?
> are we so sure that Patanjali et al would feel about that one group claiming ownership and only allowing that group to access it?
I reckon he'd be against it as Patanjali et al seem more focused on sharing the knowledge in order to benefit others but who's to know.
> Perhaps Patanjali didn't try to trademark/patent (or the equivalent) their techniques because they were morally opposed to this?
I think this point has been covered but I'll add that I've not noticed any form of communism in the system of yoga Patanjali systematised.