Yes. OT-III and above material is NEVER discussed with anyone who hasn’t actually done the level.
Scientology dogma says that prematurely exposing someone to these materials before they’ve been ‘toughened up’ by doing the lower levels first can have lethal consequences.
By the time one gets to this level one has invested so much time, effort, money and devotion, one is not apt to repudiate all that.
This is a very human reaction, as the saying goes, science advances one funeral at a time...
"...science advances one funeral at a time."
Max Planck.