Have you ever played online games? "Contacting several kids a day" is how internet chat works. I'm sure if it was up to you kids would only be able to play single player games and stay inside, god forbid they get struck by lightning or eaten by a polar bear.
What do you want gaming to do? Have a checkbox where you swear you're not a pedophile or something? That's on-par for most of these idiotic suggestions of how people seem to fucking think the internet and gaming works, and what sort of actual solution is viable.
Roblox tracks all the chat and hands it over to law enforcement and NCMEC. They restrict chat for . They give ample parental controls to limit chat/friends/interactions. Now they're adding AI-powered age validation (which I think is a terrible idea) just to appease more people like you who can't think critically about the risk, nor apparently have the ability to teach your kids "hey maybe don't talk to creepy strangers who want you to send them images and give them your home address?"