I love how just ALL conspiracy theories are lumped into hoaxes and frauds. No, no, there has never, ever been a conspiracy theory. People just don't conspire or collude for less than good natured reasons... it just doesn't happen.
And where do "muh science" people get off on shitting on extra terrestrials and the possibility of their existence when we have institutions like SETI that people like Stephen Hawking believes is important and things like the Voyager Gold Record and the Pioneer plaque? Obviously there are a great deal of learned individuals that think there might very well be extra terrestrial life and they are spending good amounts of money to try and find them, so where do "muh science" people get off on turning their nose up to the whole idea?