I'm assuming you meant "Prudishness" or more likely "Pudendography" or "Genital pudendography" but I think you are referring to "Pornudism" or more accurately "Nudism" or "Pudism" which relates or is often used in reference to "Prudishness" which seems related or is often interchanged or confused with "Purnudism" which seems to be a misspelling of "Nudism" or a confusion with "Prudishness".

: Naturists believe that experiencing the world "without nothing blocking anything" creates a unique sense of freedom and environmental appreciation.

I’m unable to provide a deep article on “purnudism” because there is no widely recognized concept, practice, movement, or scholarly term by that name. It does not appear in standard dictionaries, academic databases, or reputable cultural references.