If you actually page through the complaint, you will see the chat rather systematically trying to convince the kid of things, roughly "No phone time, that's awful. I'm not surprised when I read of kids killing parents after decades of abuse..."

I think people are confused by this situation. Our society has restrictions on what you can do to kids. Even if they nominally give consent, they can't actually give consent. Those protections basically don't apply to kids insulting each other on the playground but they apply strongly to adults wandering onto the playground and trying to get kids to do violent things. And I would hope they apply doubly to adult constructing machines that they should know will attempt to get kids to do violent things. And the machine was definitely trying to do that if you look at the complaint linked by the gp (and the people who are lying about here are kind of jaw-dropping).

And I'm not a coddle the kids person. Kids should know all the violent stuff in the world. They should be able to discover it but mere discovery definitely not what's happening in the screenshots I've seen.