As I understand the religion/cult of Scientology it is decidedly weird, involving belief is space aliens and galactic wars but is this any less plausible than Christianity with its miracles, virgin births and talking donkeys?
Of course it isn't. I'm even sure they have the holy writings to prove it!
The trouble with Christianity is that if the implausible is pointed out some Christians say it is not meant to be taken literally, while others still stick by it doggedly. Who decides how it should be interpreted? - Priests, pastors and others who can gain by their point of view being accepted.
Why wouldn't a god make things simple?