The officers are the pampered poodles of NoKo. Their pampered life depends on Kim.
Without Kim, they are nothing.
There is some apparatus in place that enables Kim to remain in power, even though there have to be some number of NKs who know he is a lunatic and could bring great destruction on the nation where they all live.
Kim has people murdered periodically on suspicion of plotting against him. Whether any effective plot will ever remove him from office is anyone's guess, but I have little doubt there are some who'd overthrow him if they can put the means together. I simply don't believe that the entire nation is as insane as the family of dictators who've ruled them for decades. And some assistance in removing him could always come from the South.
I certainly agree their lives depend on Kim.
But pampered?
Most of the generals in Kim's ever-present entourage appear to be gaunt and have aged far beyond their years.