The author of that saying, Carl Sagan, was a double agent.
He was a government paid debunker who knew that UFOs were real because he served on Government teams to discuss and study them. Nevertheless, you are welcome to suck his idol's toes and bow before his image, all you wish.
So, what do you call someone who has an abundance of solid evidence at their fingertips but refuses to have a fair-minded attitude toward such evidence--or even to apprehend sufficient amounts of it; is unreasonably hostile to it; denies abundant realities; believes shallow rationalizations and behaves like a supreme Kool Aid drinker?
Qx, my kids and grand kids know my IQ and the quality of my character. The rest of the world can go suck rocks or chase ducks.
I forget the naysayer from many hears ago hereon. He used to say that if he were ever abducted by a UFO, he'd ask them to drop by Qx's house so he could apologize. There will be a lot of FREEPERS eating that serving of crow, in due course.
Good for you. Have a great life. Screw that tin foil hat on tighter and wait for the star people to come and take you for a ride on their space ship. Make sure you go to the bathroom before you leave.