It makes no difference what they say they did or didn't do 9/11 for.
In my experience, if one reason doesn't suit their purposes, or is invalidated, they simply choose another one.
They did it because of the American Occupation of Iraq. No?
They did it because of the American Occupation of Afghanistan. No?
They did it because of the sanctions against Iraq. No?
They did it because of the Clinton Missle Strikes in 1998. No?
They did it because of the American actions in Bosnia. No?
They did it because of the American presence in Kuwait. No?
They did it because of the American presence in Saudi Arabia. No?
They did it because of the First Gulf War. No?
They did it because of America's support of Israel. No?
They did it because of America's involvement in Lebanon. No?
They did it because of America's support of the Shah of Iran. No?
They did it because of Western Colonialism. No?
They did it because they live in repressive, misogynistic poverty stricken societies, resent the fact they are stuck in the middle ages and have squandered any advantages they once held because they refuse to believe that non-islam has anything to offer them. They did it because they are consumed with self-loathing and insecurity. No?
Well, tomorrow is a new day. There has to be some excuse.
Well said.