Porn is actually a really good litmus test to see if a money/media transfer technology has real promise. Pornography needs exactly 2 things to work well - a way to deliver media, and a way to collect money. If you truly have a system that can do one of those two things better than we currently can, and it's not just empty hype, it will be used for porn. "Empty hype" won't touch that stuff, but real-world usecases will.
Unrelated to the main topic, but this is exactly why I think cryptocurrencies will only be used for illegal activities, or things you may want to hide, and nothing else. Because that's where it has found its usecase in porn.