The problem with Scientology is not the beliefs, which are indeed quite wacky.
The problem is that unlike, say, Reform Judaism, Scientology is a fascist cult. If you leave a Reform synagogue, your family isn't forced to disown you, you're not physically threatened, publicly smeared, and unable to talk to any of your friends and family. There are no brainwashing facilities or forced labor camps. If you protest a Reform synagogue, they don't send out a specially trained goon squad to intimidate and/or assault you. Reform Judaism is not run by some paramilitary outfit based on an imaginary navy dreamed up by an insane sci-fi writer. You are not forced to spend tens--or even hundreds--of thousands of dollars to "advance" to the point where you're finally allowed to study Torah.
So yes, in many ways, Scientology is more absurd, but that's not the problem here. The problem is actions, not beliefs.