It's no accident that a roman emperor (tyrant, mass murderer, and courtier) is the premier famous stoic. Nor is it an accident that the next most famous case is that of British empire public schooling, british "stiff upper lip" stocisim. (EDIT: Marcus Aurelius) himself was no stoic philosopher, he merely wrote diaries to himself in his late days -- diaries he wanted burned, not published. And these were rehresals of…
"The Stoics believed that the practice of virtue is enough to achieve eudaimonia: a well-lived life. The Stoics identified the path to achieving it with a life spent practicing the four cardinal virtues in everyday life — prudence, fortitude, temperance, and justice — as well as living in accordance with nature"
Which seems pretty close to how I understand it, and it seems a pretty reasonably approach to life.
But this wikipeida version seems very far from your description of "a deeply hollow, dissociative, nihilistic philosophy which dresses up the status quo as 'God's plan' -- a rationalization of interest to the elite above all others."