They’re moderated by the dev and publisher and they have the ability to grant moderator status to anyone for their games.

Time to get mass reporting fash etc stuff.

No company is capable of moderating all of the things a parent wants to keep from a child. That has to be a household controlled issue, and it takes a lot of work to monitor what your kid is doing. It is the same as anything connected to the internet. Some people are crazy/mean/bad influences/dangerous. No moderation will be perfect, so it is more important to understand what your kid is doing and give them guidance. Otherwise, ban them from interacting entirely.