"Keep your diary free."
... "Put your life on hold, just in case we decide to hold another fundraiser."
If they paused to think about the original excitement caused by Dianetics as a grassroots movement back in the 1950s, compared to the monolithic, oppressive failure that Scientology became after the very first few years... they'd very quickly become ex-Scientologists. And good luck to them.
Dianetics was about people auditing each other in their living rooms; it wasn't about UFOs, the Sea Org, tax exemption, religious cloaking, disconnection, sec checks...
Dianetics was flawed, for sure, but most of the flaws arose from naivete, and stupid mistakes such as marketing it as a form of medicine. The creepy stuff and the problems caused by greed only spread relatively slowly.
No wonder the poor clams want to celebrate the beginnings of Dianetics.