I think the moral line between "trying to mutilate" someone with gimmicked weaponry and Jake Roberts putatively driving someone's head back into their shoulder blades with a DDT is mighty thin, if it exists at all.
They came to Australia in 85 and 86, then not until Global Warning in 2002. Koko debuted in Sept 86, the Bushwhackers in Dec 88, so I'm not sure where you're getting this from.
Kenny Omega going nearly half-an-hour with Joey Janela somehow seems worse than Ric Flair going ten minutes with George South or an hour with Wendell Cooley.