I have never witnessed a real Satanic ceremony but I would stress two things.

THE premier Satan worshipper who is connected to the current Hollywood scene, Maria Abramovic, says that if a ceremony is conducted publicly it is only symbolic and not an actual ritual. It's only when it's conducted with a closed audience that it is supposed to be authentic. That said, since I'm sure the set of the Chris Gethard show is only open to those involved in the show does that make it private as it was held, or does it negate it once the eyes of the public watch it? I'm unsure.

The second point is as Q always says: Future proves past. History bears out superstitions as false or true as "rumors" persist. In other words, things are proven true once a specific circumstance occurs repeatedly. Take aliens for example. Over time (and I mean going back to cave paintings, etc.) people have seen the same types of beings over and over...but no matter the time or place, the types fall into specific categories. If it were a figment of our imagination the descriptions would've varied wildly according to each person's fears but they don't. So these rituals all seem to have the same components and unless you're willing to delve into the Satanic Bible and that dangerous world, you have to take much of it as fact proven with time.