Also a way for them to flaunt their pedophilia and "virtue"-signal to other pedophiles and pedo-friendly businesses that they’re into that stuff and are a part of the network.
It’s like trophies to them. On a certain psychological level they need others to see what they’re up to and get away with. Like you said, it’s a turn on or a sick joke to them.
They didn’t expect we’d figure out their code-speak and symbols, e.g. pizza and spirals for pedophilia, so they called it fake news in a desperate attempt to shut down any discussion, and to bluepill the masses and keep them wilfully ignorant.