Just another revolution on the euphemism treadmill: https://en.wikipedia.org/wiki/Euphemism#Lifespan

Well, they would accomplish a reverse revolution for once.

While it’s a shopworn example Japanese really does not have something like swear words. There are terms that are considered offensive but they’re generally disfavored terms for ethnic groups or medical conditions or that sort of thing, not things you’d shout if you were upset.

People who're upset might shout e.g. kuso or chikushou.

Those aren’t “swear words.” Nobody would object to their being used in children’s programming, for instance. While most people would be scandalized to hear characters in a children’s cartoon saying “shit!”