A "feeneyite" is a follower of Feeney as a "sedevacantist" is one who admits a public heretic cannot be Pope. We are all sedevacantist during and interregnum and all those who deny BOD which Saint Alphonsus called de fide are some form of a feeneyite.
So yes, there is such thing as a feeneyite and this is the only traditional site where the are allowed to run rampant, though in their special little hole.