The eagerness to tag the Saudi government with 9/11 comes from many quarters. The victims want someone rich to sue for damages. Rivals for influence in Washington like the Israelis and the Turks and their lobbies in DC have an interest in taking the Saudis down a peg. The Saudis are widely disliked because of their brand of Wahhabi fundamentalism. Islamophobia plays into it. That you have someone like Crown Prince Mohammed Bin Salman at the helm of the kingdom now probably hurts after the CIA leaked their conclusion that he was behind the murder of dissident Washington Post journalist Jamal Khashoggi. But the case against the Saudi government of being involved in 9/11 is non-existent.