I did not think of 9/11 when I saw the pictures. I though it was a creative design.
For people to claim they were replicating the 9/11 events is utterly ridiculous and is just another example of you can't make ALL the people happy ALL the time..
For a tall building, the design is unique and quite refreshing, and a nice nod to the urban designs of Moshe Safdie [edit to contribute some architectural design history].