The group gained a lot from the visit and study session. Whether they learned something or wasted their chance, that was not something Hudson could ascertain.
Running a strict military was a comprehensive affair. It wasn't solved by simply dragging out noble officers for a beating now and then.
If one planned to replicate a method without considering their might and their capability to suppress potential collective rebellion from subordinate noble officers, the aftermath would not be in their favor.
Hudson was able to play so roughly without causing a ripple because he initially held tens of thousands of elite troops.
Even if he upset the lower-ranking aristocratic officers, they could only seethe in silence. Planning an uprising required unity and not many dared to join such an affair.