The word in question refers, much more frequently, to a solid-waste-eating behavior in animals. In some cases it is normal, in some it indicates a nutritional deficiency. But you, assuming it meant a gay behavior, just used, repeatedly, the word copro--- oh, nevermind.
I'm going to assume you've been over-exposed to veterinarians.
coprophilia: marked interest in excrement; especially : the use of feces or filth for sexual excitement
No mention of veterinarians here. The fact that the Pope made such a vulgar reference in an interview is bizarre and certainly raises questions.