They are correct. Co-opting the American leadership is their victory.
Why shouldn’t they celebrate? Not only did they win in Afghanistan but 9/11 turns out to be a striking success for them. Muslim immigration since 2001 to the US has increased to such a point that viscerally anti American Muslim politicians are elected to Congress,they have the MSM and Academia fawning over them and protecting them, and have huge political influence. 9/11 resulted in a mass example of the Stockholm syndrome.
I suspect that US reporters are celebrating even more, at least if the Leftists that I went to college with are the same as this bunch of reporters...and they are the same.