Silly stuff in wrestling has a place - fans will generally accept it with certain characters - but when you take a guy like Hogan or Warrior or Macho Man, guys who got over traditionally, and have them see ghosts in the mirror or travel trans-dimensionally, it's ing stupid.
When the Undertaker crucifies Stephanie in order to demonically wed and presumably impregnate her with his foul seed, calling down lightning & ritual chants from his minions as he recites in Satanic tongue, nobody really questions it because it's the goddamn Undertaker. When the Undertaker rises up from his coffin, floats up out of the jumbotron, and into the night sky, nobody really questions it because it's the goddamn Undertaker. When Bray Wyatt appears out of thin air after the lights go out, nobody really questions it because it's the goddamn Underta- uh, well you get the point.
Some may say, "Well Kane is basically red Undertaker, explain why his evil stuff hasn't held up!" I will.
Kane would have totally worked long term if they hadn't transitioned him into the comedic/corporate aspects of his character. It worked with Undertaker because he simply shed himself of the mystic and declared he was going to kick everybody's ass - a message we can all get behind. Kane, however, did the Team Hell No thing which made him a comic foil to Daniel Bryan, and eventually joined The Authority in an ad-hoc supervisor position where he often wrestled in slacks.
WWE would then conveniently transform him into a Demon again whenever they saw fit, and you can't just flip a switch like that. People got used to Kane as a funny character or a jobber. He became a really minor threat; a summer PPV guy who killed time and put guys over in the slow months.
So when Brie Bella is dragged into Hell, which is located conveniently underneath the WWE ring, everybody questions it because two weeks ago Kane was wearing a shirt and tie cutting comedy promos in between jobbing to Roman Reigns. It's ing stupid.
Anyway I've lost my train of thought, so here's Scott Steiner beating 4 guys up in a pointless squash: