I think this is more your issue than his. I am seeing that as a bit of a theme with you recently (like the yard work).
Given the MLC and the fear of death, I'll wager it is nothing more than he sees his own mortality in this man's death and would want to be remembered if the same thing happened to him. Sometimes people act like things are no big deal because they are in fact the big deal (my H refuses to acknowledge that his f'ed up mom who is the source of his drama has any bearing or impact on his life).
You have to detach more. You are in the anger phase of grief and everything he does at this point is pissing you off.
