Even the best monarchs do not justify monarchy; it is a position inherently created for abuse. You may have a good king, or two, or ten - even kings who WILL put your wellbeing before their own interests - but invariably they will always be outnumbered by those who seek the position for the sake of abuse, or who succumb to the structure of the position which encourages abuse. Likewise with landlording. The problem isn't with individuals, the problem is with the system.
Yeah. Benevolent dictatorship is the most efficient government type. The only problem is the odds of getting benevolence plus the impossibility of keeping it.
It's way worse than that. Any dictator (monarchs included) has to balance interests to keep their head. They literally can't distribute wealth more freely without their top general taking over.
No king rules alone. So yes, a dictator has to keep his key positions happy. Money spent on useless citizens is money not spent for your ruling infrastructur. And uneducated hungry citizens make bad revolutuonarys.
I like this answer - succinct and to the point, but the last sentence is vague because "bad revolutionary" could mean "incompetent revolutionary" or "evil revolutionary" (am I missing a third meaning?). I'm assuming you didn't mean evil, but even so, an "incompetent" revolutionary could have issues with the execution of the revolution (eg. lack of courage) or with the desired outcome (eg. rallying behind a populist cause blindly). Would you care to clarify?
I believe they were paraphrasing part of a CGP Grey video, and if so, then "bad revolutionary" would mean a revolutionary not fit to revolt. Either by hunger, general weakness, or incompetence.