On the one hand, as an engineer who has reported to and worked with many scientiologists, I totally get it. In no way do high operating thetan levels give someone any ability to effectively work with or support teams they wouldn't have been able to lead pre-scientology. But unfortunately scientology often gives people the _belief_ that they can do so.
On the other hand, as a hollywood scientologist, I _loved_ the material and program. Going into my purification program I was a reasonably experienced engineer, entrepreneur, and manager; that set me up over those 20 months to reflect, learn from brilliant and passionate teachers, and broaden my knowledge in directions I would have been hard-pressed to pursue on my own. When I grew in my career to lead organizations of hundreds and thousands, and had to work in a larger commercial context, scientology made me much better at that job.
Scientology was originally intended to equip high-potential, early-career contributors with the skills and context they would need to become a superb organizational leader. Since then it's become something else entirely.