Originally Posted by Numinous
You don't know if they're aware of the situation outside of that room and you're not taking into account if seeing Orochimaru yet again is a factor or not for Hashirama's mood.
1. They aren't at the Uzumaki spot anymore, they went into the secret underground part of the Naka shrine. Whereas in 118, they were summoned on the rooftop of a large building while the village was under siege.
2. "Holy crap! A fourth!? Splendid! The village has endured for quite some time it seems!"
"I can't really confirm that..."
They're not aware. At all.