These clowns are just ignorant repellant morons- good luck to them.
That said I fully agree with the courts finding- I live here in the US & it took me a few years to wrap my head around the free speech thing but if you follow the logic it makes much sense... it leads to some rather bizarre situations, eg, escorting is illegal in US ( outside of a few Nevada counties & city of Providence, RI) but there are plenty of very active Punting sites & Vice will never touch them for fear of running afoul of the first amendment ( if you ever read of such outfits being busted e.g. Escorts.com earlier this year, it's to do with suspected trafficking etc).
Look on the bright side, the very existence of Phelps & his cronies serves some good: Even most conservative Americans recognize evil when it's standing on front of them!