alt Hacker NewsRoblox connects them in the first place, what does it matter that it progresses outside of Roblox? That would necessarily be the case if they were to ever meet IRL anyway.
Oh it's difficult for Roblox? A $42billion company? Whose entire business model is based around kids? It's difficult for them?? Boo fucking hoo.
The problem is that the external platforms that the children progress to generally have much laxer protection systems than Roblox does, and thus end up more vulnerable. I just chose Discord as an example as they're the most commonly cited chat platform that exploitation beginning on Roblox ends up on, and they also have problems with their trust & safety team that allows this to occur.
Meeting IRL is a problem as well, it just makes up fewer of the cases.