I tend to put angry responses to nudity-related questions down to embarrassment and guilt. It’s like the nudist world, there is a large group who get very put out if any link is made between appearance and sexuality or sexual response.
Then there are the people who can’t seem to accept that some people are shy about being seen naked. I’ve had a few people had a rant about that too.
Nudity is a surprisingly sensitive area (no pun intended!).