Different mission, different priorities at KP - and differences always make them easier to pick on. They know who they are and what they can do -which is a broad spectrum of things. They may or may not take the warrior path, which is perfectly fine. I respect the school and its grads, unless the grad individually falls short, same as I would an officer from any other source.
I have had the honor to serve with many professional and skilled KP grads as AD naval officers, as Naval Reserve officers on active duty training, as master mariners in MSC ships and other lines, as shore staff, and in the business world.
Watching a senior master (KP grad) of an MSC USNS oiler take Navy ship after Navy ship alongside on hot afternoons at sea, practicing unrep approaches and breakaways, listening to him patiently coach the raw Navy ensigns conning the destroyers and other ships - I was impressed beyond words. One master had been at it long enough that the brand new admiral in charge of the battle group came up on the radio to express thanks for the lessons he learned as an ensign 26 years earlier.
A case of apples and oranges.
KP grads all have to serve out an obligated time as a Navy Reserve officer if they don't go active duty. That means taking required courses and fitting in active duty training a certain number of days a year, squeezing it in during precious shore leave, if they are sailing. Many choose to serve a full career in the Reserve, while still sailing or working in another career field.
Their trimester system, Sea Year and sea project, plus sitting for their license exams - intense and challenging.
As I said, different mission, different obligations, just ...different. Not worse.
Edit: I also saw many great master mariners out of the State maritime academies. Professional seamen, not warriors. Worthy of respect.