No, there’s nothing odd about Scientology. Unless you count building an alien space cathedral and spaceship landing pad in New Mexico for the post-Armageddon alien meet-n-greet. If I were in this (literally) space cadet religion, the first thing I’d want to know from my alien overlords is “If your ships can conquer things like gravity, interstellar travel, and the speed of light, why in the name of Tom Cruise and John Travolta did you need a landing strip?”
It would be easy to devote space to how Scientology is just another version of occult theosophy, but that’s already been done by Jason Colavito (see here as well). When it comes right down to it, all that’s needed is to say it’s simply a UFO cult. A cathedral and a landing pad for aliens doesn’t really have another explanation.