Dr. Edgar Mitchell claims alien contact cover-up

Well, an ex-astronaut, who has worked for NASA and with a lot of people who would know, seems like a more credible source than some crazy conspiracy theories that doesn't actually know anything.

The thing is, there are millions of those "crazy conspiracy people"
Do they all equal just one astronaut? And what about all the other facts proving life on other planets, like Area 51 and all those sightings and stories of aliens.