I really doubt the problem is "nobody there understands the theory". More likely, as a large public company with considerable presales and aggressive public commitments, the ops people are probably being pressured to "just push a few more cars through manually today, while trying to improve the automation". It's easy to armchair-COO the situation and claim that you would halt the entire line (or problematic parts of it) for 30+ days unless/until every step is at 90%+ yield, but if Musk or the Board is saying no to that, you are basically trapped in a suboptimal local maximum that you know how to escape, but are socially unable to.