Seems like a nice way for LRH to avoid any responsibility for training people (and potentially reveal HIS OWN lack of knowledge in those areas, if he tried training people). This way, anything going wrong would be blamed on the Sea Org member, and no "failure to supervise" blame accruing to LRH.
It had to do with motivation. In a real military, in a real war, with real things at stake like national security, liberty, borders, protecting allied countries, etc. people are self motivated. They also are motivated over real benefits like health care, and pensions instead of co-auditing up the Bridge to Total Freedom as an impoverished, demoralized staff member. The discipline in the military is severe but they are in the business of life and death. LRH must have been envious of the military to not be able to order people to charge to their deaths regardless of lack of prior experience in charging to one's death and to execute them for things like mutiny. That was the greater injustice.
Most of the motivations in the Sea Org are avoiding punishment, saving the planet from degraded Wog's bad judgement and psychiatry (who LRH seemed mostly to want to replace - not eradicate), auditing people to erase subconscious and actual demons, maybe crew loyalty (for all those people writing knowledge reports on each other), but there is little else unless you also believe that we are still at war with the Marcabian Confederacy.
The main real problem with a lack of motivation in the Sea Org is a decrease in revenues to LRH's offshore accounts and diminishing his ability to stamp his name into history. Any reason to shoot down excuses will suffice, including the idea that everyone should be expected to know and do what LRH wants because they already did all of this before when they served him as a Loyal Officer in another life time.
That's really why all this elaborate LRH whole-track Matrix construct is so important. There's just no there ...there.