He wouldn't have learned anything, except that the situation was Apocalyptically bad, which was kind of the point. Again, maybe there will be restored scenes on the DVD. But, to me, it seemed odd that he wasn't desperate to find someone or get information.
It might have enhanced the dream-like quality of it all. You know how sometimes a dream gets weird but you sort of roll along with it accepting it? Maybe I'm reaching there but it seemed to highlight just how overwhelming the situation was that he didn't even question it but sort of just absorbed it.
Not knocking what you're saying but offering another possible reason not to show it.