I was asked why I post about Scientology so much

I have to be honest here, it's because Scientology makes me feel better about living in this world. It shouldn't do that, but it does.
Scientology is completely false about its core claims, yet for many years it was absurdly successful. Hubbard created his own fake reality, and persuaded tens of thousand of people to live there. It's amazing, and deeply educational that that is even possible.
It means the world is not as brutally monolithic as it appears. You can create a different reality, provided you appear to conform to the powers that be.

There's less pressure when you understand that no one knows anything - or at least they don't know anything about your values (not that they want to, or need to, of course). Things are easier when you know you can just ignore the dumb teachers and mainstream commentators and Tiger Mothers.
Everyone's weaknesses are always on display, but that only matters when you want to play in someone else's reality. For example, by the need to appear "cool" or have high status or power.

I don't really know anything either.
Like, why do so many people think that scene with the home video of the alien at the Brazilian party in the movie "Signs" was scary? I mean it was a good scene, but not scary.

Speaking of aliens: Scientology doesn't have as many aliens as mainstream commentators seem to believe. Hubbard deliberately throttled his imagination when he made that stuff up. By making his mythology as boring as possible, he made it seem more believable to boring people.