To be fair, "Do Not Show Anyone These Techniques" is a pretty standard part of Hindu initations, from what I understand.

Now, if they had said: please regard those without these techniques as inferior to those who (allegedly) practice these techniques on a daily basis, then you'd have a case.  Which I'm sure you do, but probably more on implied superiority and pressure to convert.  Just guessing, of course.  I was never married to an ex-premie while I was a premie.