LOL
I've gamed under some of the cruelest GMs ever and have myself been referred to as a Twisted GM
"My White Wolf Vampire Campaign caused two players to quit until I shifted to a Champions RPG

They said they were ready to play as Vamps in the City of NOD, it wasn't my fault that the culture that saw humans as food would be so depraved in their entertainments
All one needs do is remember that it's only a character not a family member that's being so mistreated

Goddess! Such whimps wouldn't have lasted one session in the Lesbain gaming group I hung out with in collage