Coming from India, I can validate that such practices are true. There are a lot of fake Spiritual thugs who lure the visitors in fulfilling their sexual favours.
But, not all them fall in the same bracket. As you said, we need to trust our instincts. A very long time ago, my grandfather told me that, "trust no one, no spiritual leader or a saint. Trust what you feel. Feelings never lie."
Thanks for sharing this eye-opener. Bravo!