Is this true though? Where is the proof? I think those things correlate weakly. I present covid restrictions as exhibit #1.Granted that Oman has a bit better Democracy Index than UAE, the issue with dictatorships in general is the law and rules unreliability. It appears that anything can change faster than anywhere in this part of the world.
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For one who looks for long term stability maybe rather look for a country not strictly ruled by a single supreme leader.
And please differentiate between dictatorships and totalitarian states.
I think the future might be bright for dictatorships that allow for people to freely move in and out. That is going back to the city states of Italy.