Unfortunately there are many people who would, and do, abuse that trust. This happens more often than not. The fact that I may not trust a patient has zero to do with their gender, culture, or appearance. As I have learned over the many years of being on this planet, trust abusers come in all shapes and forms, and genders, and cultures.
That said, I agree that if I was a pt I dont want to be recorded and yes I expect the nurse, MD etc to explain clearly what they are doing.
Also, I dont think an "easy/cooperative" pt would refuse a chaperone, IMO.