While you're right about the fact that there's not really any more Simpsons Fan Sites, and the old ones are dead. The owners of the old sites including myself, have gotten older since the sites were established mostly when they were in their teens and are now in their late-twenties to early thirties.
To put that into perspective, I took control of TCB in 2004 when I was 17. It's ten years on and I am now approaching 27. I've moved onto other projects, such as SMF, my dissertation and my Lets Plays, the only real reason I'm keeping WOTS around is because I use it as a testing ground. Neither Leif or I have actually produced any new content for it in about a year.
The NHC is still around, and I've not seen many fanartists get banned on DA, a majority deactivate their accounts for no real reason.
Link to Post: https://bongo.babysimpson.co.uk/index.php?msg=13656