Sounds like some uninformed biases are influencing your perspective.
Why wouldn’t there be some serious comments about UFO’s in that many classified cables?
UFOs as in purely unidentified objects? Sure. UFOs as in visitors from outer space? Probably not.
Although, it doesn't say what's being said, or who is saying it. They could be talking about Chavez or some other nut-job who's known to get his crazy on.