"This isn't revenge porn, surely. It's extortion isn't it?"
I was thinking that myself. Revenge porn is when you post nude pics or sex videos of an ex to get back at them. None of these women were ever involved with Brittain, so what's he taking revenge for?
(That's a rhetorical question, by the way. No doubt Brittain is of the mind that he's taking revenge on all women because none of them have ever been involved with him.)