I am pretty sure they have anticipated these sorts of suits, and have rendered themselves "free of assets", and thus immune from lawsuit.
I believe that this is something criminals learn quite quickly.
Traditional First Amendment jurisprudence is that you can say some awfully outrageous things and still walk with impunity. The reverse side of this doubtless helps such outfits as FR itself. But still, there’s a point when you got to wonder if it’s more than dedication to an abstract philosophy, if there’s blind malice and hate going on. The same kind of thing that liberals are quick to slime folks like Rush Limbaugh for, sometimes only on hearsay. Except for liberals it’s true.
Maybe his team can follow the lead of James Garner who broke through this legal brickwall back in the 1960’s...