In a free society, I'd have asked for for MBS' life under retributive justice. I wouldn't want him killed, just would want a much fairer diya (double digit share of Aramco?).
The Wikipedia article says https://en.wikipedia.org/wiki/Diya_(Islam)
> It only applies when victim's family want to compromise with the guilty party; otherwise qisas applies.
From a humanistic standpoint, the assassination was abhorrent. From an international politics and international law standpoint, intolerable. From the standpoint of a recently elevated absolute ruler suppressing dissent, diligent.
As the previous poster said, at least they're paying benefits, even though it's all part of the cover up. From a Western, guilt-based moralist standpoint such benefits can seem like a slap in the face. From a Middle Eastern, honor-based moralist standpoint, it's the decent thing to do, regardless of what precipitated it.
Of course you can read the book one thousand different ways.
The point is that it is nice they fulfilled that promise.
edit: remember, their religious clerics can say whatever they want and thats the law in a theocracy. English wikipedia is not going to describe that adequately