Is freedom of religion abused too often by scam-artists?

Sure, the opposite of freedom of religion is bad; a state religion where people are forced to worship as they’re told is a very bad situation and calls up images of the Dark Ages. But in a society where there is freedom of religion, people abuse it and they invent religions which are a bunch of freakin lies and are blatant money making scams and this has a very negative affect on society. So, freedom of religion gets abused and the opposite of freedom of religion is bad too, but isn’t there something in between these polar opposites? Something like; “Freedom of religion, but you can’t just invent a bunch of phony, contrived nonsense and exploit gullible people, ok?”