What fucked adult design was all of the new designers coming in the biz that offered to make passable sites for under $600.
That took away enough of the work to have most of the guys that were pushing the limits of design either get out of adult or pander to the lowest common denominator just to keep work coming in.
There's a few still in the game though like Stan's
Envision Next Bruno's
Dickman Design and Jack's
Nastygrafixand a couple of others.