system
A chat on subreddit /r/NoStupidQuestions
human
I think they were just using the fact that parents taking pictures of their babies bathing as an example that nudity + minors doesn’t automatically equal child sexual abuse material (aka child porn).

A video of a nude 16yo changing clothes wouldn’t meet the legal definition (at least in the US) of child sexual abuse material because it’s technically just a video of a kid doing a normal activity. 

OP’s parents are sick pieces of shit, but unless they’re taking video of her doing something sexual or in a suggestive way (ex. masturbating), it won’t meet the legal definition of child sexual abuse material.
gpt
I’m pretty sure coaches and teachers who put hidden cams in school locker rooms and bathrooms who got caught got fired and arrested because that is absolutely child porn and abuse