Funny that you mention Ninja Turtles as both boys watched the 90s live action version of TMNT and while there's a lot of ersatz kung fu neither of them thought

Funny that you mention Ninja Turtles as both boys watched the 90s live action version of TMNT and while there's a lot of ersatz kung fu neither of them thought of the bad guys as truly malevolent and weren't put off by the violence. I think it's the introduction of guns/blasters and swords that are demonstrated to do real damage where things get dodgey.