Maybe he's choosing to connect the 99.998% of Facebook users in Saudi Arabia and UAE who have not been ordered blocked by their governments.
But, honestly, I think all he ever really wanted to do was make money, and control the narrative. The connecting the world stuff makes a nice sound bite, and it was the motivation for some of the others at the company though. Read Careless People.
And, additionally, it should be noted the corporate structure gives Zuckerberg near absolute power. So you can't really blame the decisions on anyone but him.