Obviously Scientology is a laughable pile of dog shit, but how is it any worse than any of the other superstitious cults out there, like Christianity or Islam?
If you're going to make it a crime to pressure people into giving money to a cult based on a bunch of idiotic stories, you might as well start with the older ones.
Look at Mormons. They shun their own family if they don't buy into their crap. Threatening to make you effectively dead to your whole (brainwashed) family - that's not extortion? Catholicism has excommunication, same idea.
Christians used "God" as an excuse to perpetrate some of the worst *atrocities* in history. The Crusades. Manifest Destiny. George Bush. The list goes on.
In the scheme of things, bilking retarded celebrities out of their "hard"-earned cash just doesn't seem that bad to me. Frankly, I find it amusing. Scientology is the Stephen Colbert of religion. Their own founder made it so ridiculously outlandish that only a total idiot would actually believe in it. I'm sure L. Ron would laugh his ass off if he knew how much money Tom Cruise had forked over to his church.