Probably they wanted to deny it was terrorism, because otherwise nobody would ever fly again.
So, the “official” story is a fraud.
(And not for the first time.)
But at least in this instance, the motive is understandable.
They denied ti was terrorism to help Clinton get re-elected.
If that is the case, then the measures taken as a result might have prevented 9/11. Once again, Billy Clinton is to blame. Just sayin'.