Huh? The fun of Halloween doesn't depend on actual belief in the supernatural -- if anything, just the opposite. Scary things are only fun if you know they're harmless fantasies.
Sure, to some people, it doesn't depend on it. To others, belief to some degree or another in the supernatural is part of their Halloween celebration, if that's the right word to use.
Some people enjoy the Halloween season because they do believe that paranormal phenomena of the Halloween sort are real. Some people deliberately seek out alleged haunted locations. Some people mess around with a particular board game that supposedly is a conduit to other worldly entities. They get a thrill out it. It may be fun and exciting to them.
People have their own individual reason as to whether they enjoy, or not enjoy, Halloween.
But my post was not about that.
The way Kirk, Spock and McCoy spoke somewhat dismissively about Halloween in "Catspaw" led me to speculate that Halloween in the TOS universe may no longer exist, or perhaps not in the form as we would recognize it. Maybe the enlightened humans of the Star Trek universe outgrew Halloween, like the Greeks outgrew gods like Apollo (per "Who Mourns for Adonais?"). Of course, Star Trek is fictional like Apollo. You can speculate however you want.
I didn't think anyone would take my comments, about Halloween not being fun in the Star Trek universe, seriously.
Actors do the jobs they're hired to do, whether that means playing a brilliant scientist or hosting a trashy pseudoscience mockumentary. Neither should be mistaken for a reflection of who they actually are or what they believe.
Yes, actors do what they are paid to do. Or they could turn down jobs they don't want to do.
I don't know whether Nimoy, Quinto, or Shatner actually believe the message that their shows espouse. Nor do I care. (But I have read an interview where Shatner describes himself as "an agnostic" when it comes to the paranormal.)
What I am interested in, is whether they do a good job hosting the show while I am watching it.
But my point wasn't even that. Kirk and Spock had a dismissive attitude about the paranormal theatrics that they encountered in "Catspaw". I found it amusing that the actors, who played Kirk and Spock, actually hosted shows that lend credibility to various paranormal phenomena, nothing more than that.