To tell it in an exaggerated way, maturity should not imply sociopathy or completely disregard for everything.
Obviously I am referring here to Kottick situation. But, the definition where it is immature to tell the truth and mature to enable powerful bad players is wrong definition of maturity.
But, when people use "maturity" as argument for why someone must be enabler, should not do the morally or ethically right thing, then it gets irritating. Conversely, calling people "immature" because they did not acted in the most self serving but sleazy way is ridiculous.