Newsmax's expert, Marshall Smith, is evidently unfamiliar with some of the A-300 features, as well.
From an earlier thread, which included A-300 pilots and an aircraft engineer with a company who manufactures nacelles, we discovered that any damage to the hydraulics would make it impossible to deploy the thrust reversers -- the exact opposite of what the expert contends.
Moreover, the A-300 edition that American flies is not "fly by wire". This controversial approach was first employed on the A-320.
Let's put it this way: if it was sabotage, it had nothing to do with the thrust reversers.