See my response to strbean upthread.
No, they don't, because they can't take actions in that virtual reality and sense the consequences. They can't test hypotheses about how the reality works. They can't even frame hypotheses about how the reality works.
As you note, this is very different from using text data as a training set for a language model. I am not familiar enough with this work to comment on it in any detail, but it is not the kind of work I have been addressing in my comments elsewhere in this thread, so my comments should certainly not be taken as any kind of evaluation of what I think this kind of thing is or is not capable of.