The problem with monarchies is that it all hinges on one person. If something were to happen to MBS, there is no guarantee that Saudi Arbai won't go back on full-throttle religious conservatism.
And that's why democracies, however flawed they may be, are important.
@RightPorpoiseDemocrat3wks3W
You can be both a murderer and a reformer.
One of the things that prevents something from happening to MBS is his calculated ruthlessness. People fear him and this fear keeps them in check.