Hmmmm...I guess it depends of your point of view.Although these clowns are *claiming* to be Catholics and *pretending* to be Catholics,they're publicly (and,often,proudly and defiantly) proclaiming their disgust with the Church's position on vital issues like abortion and homosexual "marriage".
My understanding of the Church's teachings suggests that such actions qualify them for excommunication.And in my book,once you qualify for excommunication,you're no longer a Catholic.
Well, the definition of a Catholic is one who is in communion with a licitly consecrated bishop in communion with the See of Peter.
You may have your own definition, but unless you are Benedict XVI posting with a somewhat unusual handle, your definition doesn't count.