My take on it is he's saying BS in a nice way
You've got a series of excuses along with a very good reason not to go.
But for some reason you repeat the excuses.
It's OK, you don't HAVE to go, and you don't even need a list of reasons.
1 is good enough.
You are on call, and you need to be responsible.
Done.
Everything else can be worked around, but that can't, so there is no further discussion required.
On the otherhand, my wife does that.
She piles on a list of BS excuses why something can't be done, since she feels the real reason is not considered important enough.
By the time I "solve" all the BS ones, I come across the real one.