HERE'S YOUR FREAKIN ANSWER TO THIS ISSUE:
If you hate the film, then don't watch it. Unless you'd rather live in a dictatorship then just deal with it.
Yes it is a continuing tragedy and all the wounds will never close. But America is a capitalist society. Just like when Mel Gibson made The Passion to make money off Jesus, people will make money off 9/11. While its morally wrong to make money off 9/11, this is America and Hollywood will come up with any excuse to make money.
