It would be more chaos than Second Life considering people have avatars that can immediately hijack your screen with effects and in a VR headset, I would imagine it would be vomit inducing. From what I know he's been to public lobbies on his own, just not on stream. He's probably had his fill of them already.
I do miss the old Ralph streams when he would mess with randos and typical furry shenanigans on Second Life, but that was back when his audience was smaller as well.
I think even if he ended up going to a streaming platform that wasn't as strict on the content shown, he probably wouldnt spend too long in the public lobbies given how overwhelming they could get.