I can guarantee you that on Sept 10, 2001, there were lots of threads that predicted things that have not and will not happen.
Alot of things were/are predicted that have never come true. Prior to the ll1th of September nobody wondered why Middle Easterner men, in groups were paying cash (only) for flight lessons. That they were asking questions about crop dusting. That the same profile individuals would be getting Commercial Drivers Licenses. Etc., etc. That said, there is a reporting network provided by the FBI. If any of us encounter anything that 'spooks us' makes us wonder, we should use it.