I think it's not desirable to spend time fixing these elaborate scenarios. The same sort of kids trolling kids will happen via other means. At the end of the day, if a kiddo sees some porn, it's not the end of the world. Plenty of kids hear their parents having sex or will open a door they shouldn't have and see people in action. Making everything completely aseptic is only pandering to prude adults' discomfort.
And ultimately these LLM are tools. People are responsible for what they do with the tool. My Dewalt drill shouldn't try to decide which holes to cut, it's up to me. If I drill holes in the pattern of a dick shape, it's my fault. We don't hold back drill development because of their potential ability to create obscene art or depict gruesome situations.