Not taboo - it's just that straight actors still risk their careers commercially and economically. They have to please the crowd - they're movie stars; their image is their industry. It goes beyond acting.
“The president took the advice of my East Texas grandmother: If you can skin a cat without getting the room all bloody, why not do it that way?”
“Misery's fine - as long as you know you can get out of it when you want to.”