Here is the portrait of the "ideal" Aramco manager according to what I saw. This manager communicates expectations, usually from higher up who in turn took their orders from Riyadh. However, first he increases them, so if it was supposed to be done in a week, it is due tomorrow, etc. He does not question the higher authority about the assignment in any way, just passed it along. His main role is not make sure the assignment is carried out. This is usually done through yelling and threatening. His goal is to make sure that if the task doesn't get done, then he has made the persons life as miserable as possible. It doesn't matter why.
If you have ever been in the military, then I am sure you will have encountered this kind of drill Sargent leadership. Being too soft is the surest way for a local to ruin his career. Even if he drives people out, a drill sergeant is still considered a good manager.
Not every local managed like this, but more and more, the ones that behaved like this got promoted. I think this is because Aramco no longer wants to keep people. The goal is to get the most out of them while they are there. It didn't used to be like this, but things changed. If you are ok working in an environment like that, by all means, come.