Operation clambake probably. They had almost every single internal scientology document available online by that time. I think you can still go there and read everything from their vault.
South Park
Everything related to the animated television show South Park! (Images, videos, quotes, news, articles, thoughts, trivia, etc.)
Dude I was a high schooler writing papers about how they’re a danger to society in 05, i don’t think it was a secret
The Xenu story has been floating around forever. It’s not a huge secret. Although Scientology protects it fiercely because it’s their most sacred “truth” and deep down I think even some of them know how absurd it is if they were to make this public. Plus since it’s the highest OT level you can get to currently, if they just released the info you learn at that level now, Scientologists have no reason to pay for it later.
The reason many stay in Scientology after learning the Xenu nonsense is as Leah Remini described - by that time you’ve invested years of your life and tens of thousands of dollars or more for you to get the “truth” of the universe as brainwashed aliens souls in DC-8’s and a galactic warlord. You think “there HAS to be more than this” so you stay in it because you don’t want the shame of believing you wasted all that time and money.
They hired a private detective afaik
Celebs literally only join for attention
Simple. South Park knows what everyone is thinking.