i mean its not like he was like omg i hope it burns down idk it was just an apathetic reaction like we do not need to care about everything concerning random people!!! if it was like the person he was talking to's house on fire then yeah it'd be weirder for him to not care
I feel like the snippet only showing him saying "yas" to the fire could possibly be taken out of context, my first thought was "is he responding to that, or was he responding to a post above without seeing that one." So I'd have to see more of that conversation before deciding if that was in response to the fire or not.
As for the other thing...I am extremely sensitive and I wasn't really bothered by that. I think he was trying to respond to a tense situation and it may have been awkward, but "someone's granny seeing the pearly gates tonight" just seems like he is observing the situation? If he had said something like HAHA AN OLD BITCH DIED then I'd be appalled.