I don't need to read Snow White and the Seven Dwarfs to understand its a fairy tale....Tyson does not need to read all books on UFO's to understand that claiming they are Alien is nonsense, and that at best, they simply remain as Unidentified.
Tyson's intelligence and professionalism is not in question here: It is your gullibility and ignorance that is in question again.
To your second statement , Tyson does not need to read all books on UFO's just some . I'll bet he has read none .